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C++/Questions Answered by Expert vijayan
| Subject | Date Asked |
| Is heap an implicit data structure to implement priority queue? | 1/20/2012 |
| Q: My question might seem childish but I really don't understand this question as I am just a newbie to ... A: I too don't really understand what the term 'an implicit data structure' means. Perhaps, the ... | |
| saving a structure to a file. | 1/9/2012 |
| Q: halo mr. vijayan. my question is relatively simple (i am new to programming). how do you write a ... A: Input-output of a bit field directly is not a good idea; there are implementation-dependencies ... | |
| Error in program | 1/3/2012 |
| Q: I use Turbo C++ v4.5 on Windows Vista. The below-mentioned program always gives an error "Error ... A: 1. Switch to a more current compiler suite and IDE - for example, CodeBlocks+MinGw ... | |
| 64-bit | 12/29/2011 |
| Q: How are you? I have written a script for a 32-bit machine (Ubuntu). I'm now compiling it for a ... A: > What is the right way to do it so that it would work on both 32 and 64-bit? When printing out a ... | |
| Help me to fix the bug in my c++ code | 12/25/2011 |
| Q: The following function in Turbo C++ (Win XP environment) has been written to return the maximum of ... A: Without seeing the whole program, I don't know why you get an error after adding precisely 13 ... | |
| Programming Language Source Files Business Rules. | 12/15/2011 |
| Q: http://en.wikipedia.org/wiki/Source_code There are some queries from my side regarding Programming ... A: > Can Programming Language Source code file naming extensions be duplicated ? > Does it become ... | |
| Test score | 12/9/2011 |
| Q: #include <iostream> #include <iomanip> using namespace std; { const int maxNumScores = 10; int ... A: Write a function to sum up all the scores: double sum( const double score[], int numScores ) { ... | |
| C++ Compiler | 12/6/2011 |
| Q: Is it possible that install a compiler of c++ in mobile and run small programs with it? thanks in ... A: Yes. Though the specifics depend on the mobile platform. For example: ... | |
| scope | 12/5/2011 |
| Q: How are you? Thanks for taking questions. In my *.h file I have this class class LargeFile { int x; ... A: > void mergeFiles() > { > x=5; > } > The compiler says that x was not defined in this scope. But ... | |
| C++ | 12/2/2011 |
| Q: Sir, i m a beginner in c++? Please recommend a c++ tutorial programe Online? Sir Can we make ... A: > What can i do with visual c++? Visual C++ is an IDE and C++ compiler; it is a tool to assisting ... | |
| C++ | 12/1/2011 |
| Q: Sir, i m a beginner in c++? Please recommend a c++ tutorial programe Online? Sir Can we make ... A: There are several online C++ tutorial sites; here are a few of them: ... | |
| About Dots and Boxes Program | 11/28/2011 |
| Q: I read your previous post on the dots and boxes codes. I have a question relating to the same. How ... A: > How do we declare the following function- void print_grid(const grid_t& grid, std::ostream& stm) ... | |
| Computer Games. | 11/19/2011 |
| Q: 1. Is Computer Games classified as a System or Application Software ?. Computer Games involve ... A: > If we use Joystick interfacing input device for the particular game designed, it will also require ... | |
| Computer Games. | 11/17/2011 |
| Q: 1. Is Computer Games classified as a System or Application Software ?. Computer Games involve ... A: > Is Computer Games classified as a System or Application Software ?. > Computer Games involve ... | |
| Convert visual c++ to linux c++ | 11/15/2011 |
| Q: My name is srikanth and i am doing some breakpad related testing and i want to crash a specific ... A: C or C++ is platform agnostic; the language libraries do not provide any facilities for this. Start ... | |
| Dots and boxes game | 11/11/2011 |
| Q: I have written most of the program to play against the computer and understand what is supposed to ... A: Use a std::vector for the grid: #include <vector> #include <iostream> typedef std::vector<char> ... | |
| Help turning psuedo code into c++ code | 11/9/2011 |
| Q: Alright I am trying to write a program that will play Dots and Boxes, the common paper and pencil ... A: > char grid[input][input]; This is not valid C++. The number of elements in a C-style array must be ... | |
| Help turning psuedo code into c++ code | 11/9/2011 |
| Q: Alright I am trying to write a program that will play Dots and Boxes, the common paper and pencil ... A: Ok, let us take this up one (small) step at a time. The grid is a two dimensional NxN structure as ... | |
| help me out | 11/3/2011 |
| Q: i understand you but can you help me out i tryed to use vector function to solve the search ... A: I can only guess; most probable cause would be that the file "document.txt" does not exist in the ... | |
| search | 10/31/2011 |
| Q: i doesnt display that search word can you please help me out #include<iostream> #include<math.h> ... A: > display only the text where the search word is std::string::size_type pos = line.find(SearchID) ; ... | |
| search | 10/31/2011 |
| Q: i doesnt display that search word can you please help me out #include<iostream> #include<math.h> ... A: You need an <b>int main()</b> in every C++ program. You have included a lot of headers, many of ... | |
| ADTs help | 10/25/2011 |
| Q: Alright so I made the functions from the calls inside "primaryElection" and my program compiles and ... A: #include "candidates.h" #include "candidateCollections.h" #include "states.h" #include <fstream> ... | |
| ADTs help | 10/24/2011 |
| Q: Alright so I made the functions from the calls inside "primaryElection" and my program compiles and ... A: There is a logical error in the function you indicated. void readCandidates(istream& input) { // ... | |
| c++ | 10/20/2011 |
| Q: polymorphism is two types. 1)compile time polymorphism 2)run time polymorphism. then what is meant ... A: Compile-time is the time when your source code is being compiled. Templates are instantiated at ... | |
| Web Designing and Web Development Combination Exper | 10/18/2011 |
| Q: We observe that there are experts in Web Designing Software viz. Adobe Photo shop, Flash, Action ... A: No, I do not. Between the two, I think that great programming is the more creative activity. I ... | |
| Debugger Design and Source Programming Language in IDE. | 10/18/2011 |
| Q: http://en.wikipedia.org/wiki/Debugger Most of the Integrated Development Environment has a ... A: > 1. Similar to Compiler, De Compiler System Software Design, what are the Algorithms for Designing ... | |
| Web Designing and Web Development Combination Exper | 10/17/2011 |
| Q: We observe that there are experts in Web Designing Software viz. Adobe Photo shop, Flash, Action ... A: The skills required are quite different. As are their world views. Programmers are technical ... | |
| question about c | 10/16/2011 |
| Q: sir compiler compile the whole program . compiler is also a set of program than who checks the error ... A: The current practice is that the compiler writers (and users over a period of time) run these tests. ... | |
| Linked List | 9/29/2011 |
| Q: for some reason the data are not linking in the following code. The purpose of the code is to take ... A: p=p->next; p=new node; The pointer p is being lost here. p->next = new node; p = p->next ; ... | |
| Frequency analysis | 9/27/2011 |
| Q: .. I've an cryptographic related assignment where I need to code frequency analysis program that ... A: Rather than use a struct, it would be simpler to use a two-dimensional array to store the ... | |
| C Language | 9/22/2011 |
| Q: #include <stdio.h> main() { int n=1; printf("%d %d %d", ++n, ++n, ++n); } what will be ... A: The program is ill-formed and results in undefined behaviour. printf("%d %d %d", ++n, ++n, ++n); ... | |
| c++-data types | 9/21/2011 |
| Q: How to make user defined data type with its own range(e.g. 1 to 5) in c++ ? A: A simple way is to use an enum: enum values_t { ONE=1, TWO, THREE, FOUR, FIVE }; If you want to ... | |
| overloading operator in c++ | 9/18/2011 |
| Q: i tried overloading << operator. it gave me compilation error for following code. ostream& operator ... A: > Is it mandatory to keep overloading operator functions as friend. No, it is not. Overloading ... | |
| System v/s Application Software | 9/14/2011 |
| Q: Software can be broadly classified into 1. System Software 2. Application Software Examples of ... A: > As we observe there are more IT Cos in building Application Software than building System Software ... | |
| wmm and mpeg | 9/7/2011 |
| Q: How do I know if my mpeg video file is a mpeg 1 or mpeg 2? I asked this same question on Bing and ... A: If you cannot play the video in Windows Movie Maker, it is probably MPEG2. "Although you can play a ... | |
| parameterised constructor | 8/27/2011 |
| Q: Sir, Yesturday I was reading about parameterised constructors. I read "There are two types of ... A: > I just want to know is whether there is any difference between working of these two? There is no ... | |
| Could you plz help me in solving my general query regarding recruitment process ? | 8/18/2011 |
| Q: This is sanjeev MCA student (Final year).Could you plz help me in solving my following general query ... A: > here 65% aggregate means the 65% marks should be in 10th,12th,Graduation individually > or ... | |
| fatal error in c++ | 8/11/2011 |
| Q: #include<iostream.h> void m1(int *a){ a = new int[20]; a[0] = 100; } void m2(int *a){ a = ... A: Well, Turbo C++ is obsolete - it predates the C++ standard. Three good options for programming in ... | |
| fatal error in c++ | 8/9/2011 |
| Q: #include<iostream.h> void m1(int *a){ a = new int[20]; a[0] = 100; } void m2(int *a){ a = ... A: It appears that you are either using an obsolete, non-standard, C++ compiler or there is a problem ... | |
| fatal error in c++ | 8/9/2011 |
| Q: #include<iostream.h> void m1(int *a){ a = new int[20]; a[0] = 100; } void m2(int *a){ a = ... A: <iostream.h> is not a standard C++ header. Use #include <iostream> instead. You may want to add ... | |
| Operating Systems Booting through USB Tape Device | 7/19/2011 |
| Q: Every Operating System has different File Systems Format. As we know Tape Devices, a secondary ... A: > So if Programmed (BIOS programming) and Writing a Device Driver under Windows Os maybe in C or C++ ... | |
| Operating Systems Booting through USB Tape Device | 7/18/2011 |
| Q: Every Operating System has different File Systems Format. As we know Tape Devices, a secondary ... A: > what is the reason that we see CD ROM , DVD ROM, Hard Drives, USB Pen / Thumb Drives being used as ... | |
| Operating Systems Booting through USB Tape Device | 7/18/2011 |
| Q: Every Operating System has different File Systems Format. As we know Tape Devices, a secondary ... A: > can we also use tapes as a bootable media for Booting Operating Systems ? Yes, provided the bios ... | |
| c++ site | 6/7/2011 |
| Q: I want to get a career making video games but don't know exactly where to start. Do you know any ... A: Here are some game development resources: gamedev.net http://www.gamedev.net/ Check out their ... | |
| Decompiler and Obfuscator System Software programs | 5/31/2011 |
| Q: I want to get some inputs from your end regarding Decompiler and Obfuscator software programs. ... A: > Some information on Logic and Algorithms for Designing and Building a Decompiler program - > say ... | |
| I did it by my own | 4/28/2011 |
| Q: But the problem is about Epsilon now ...I am not able its giving error ... I have to include it in ... A: Slight variations in rounding can change the outcome of exact floating-point comparisons. leading to ... | |
| CORRECTTNESS PLZ | 4/21/2011 |
| Q: circle and rectangle is inherit with only point not point3d. kindly check this and make it correct ... A: Inheritance in C++ implies an IS-A or CAN-BE-SUBSTITUED-FOR relationship. So I think that point3d ... | |
| Clone and encapsulation in c++ | 4/19/2011 |
| Q: as i understand clone provides way of virtual constructor or copy constructor. I've read somewhere ... A: > As per my understaing encapsulation hide the implementation details. So how are we achieving using ... | |
| serial port communication using c++ | 4/18/2011 |
| Q: sir, i have been asked to do serial port programming using C++ it should include opening port, ... A: Serial port programming is somewhat platform specific. Since you are using VC++, I presume that you ... | |
| can we write C++ in visual studio | 4/18/2011 |
| Q: I am having Microsoft visual studio 2010 express(Microsoft visual c++ 2010 express).when i tried to ... A: > '67.exe': Loaded 'C:\Documents and Settings\reshmirose\Desktop\67\Debug\67.exe', Symbols loaded. > ... | |
| can we write C++ in visual studio | 4/18/2011 |
| Q: I am having Microsoft visual studio 2010 express(Microsoft visual c++ 2010 express).when i tried to ... A: > please tell whether i can run C++ programs in visual studio or not.... Yes, you can compile and ... | |
| CharBuffer | 4/17/2011 |
| Q: "I want to design & implement a CharBuffer class, particularly handle character stream for storage. ... A: > CharBuffer CB1= new CharBuffer(5000); Create a char buffer this way: CharBuffer CB1(5000); In ... | |
| Clone and encapsulation in c++ | 4/15/2011 |
| Q: as i understand clone provides way of virtual constructor or copy constructor. I've read somewhere ... A: Cloning is the making another object which is an exact copy of a given object (instead of just ... | |
| How to create a printdata function in this code? | 4/10/2011 |
| Q: I have a programming assignment due soon and cannot figure out this last part of the assignment. ... A: Well, this part of main should be something like: for(int i=1;i<=count;i++) { ... | |
| convert roman to decimal with recursion | 4/9/2011 |
| Q: i need help to find out a correct algorith to convert o roman numeral string in a decimal numeral ... A: a. Create a table of Roman numerals and their values: I = 1, V = 5, X = 10, L = 50, C = 100, D ... | |
| algorithm | 4/8/2011 |
| Q: how "Divide and Conquer method" is differ from "Greedy method"? which One is better? A: > how "Divide and Conquer method" is differ from "Greedy method"? A divide and conquer algorithm ... | |
| Removing Duplicates in a Vector | 4/6/2011 |
| Q: I am writing a program that is suppose to remove duplicates in a vector. I am having trouble ... A: > I am suppose to go through all the elements and check to see if the same value occurs at a lower ... | |
| Help with turning this Pseudo code into c++? | 4/4/2011 |
| Q: Hey, I have a c++ test in almost a week and am having trouble with this one question on functions on ... A: I'll get you started on this homework. #include <iostream> void getdata( int& length, int& width, ... | |
| textread function | 4/2/2011 |
| Q: I was really get dumped for more than a month completing this project of mine. Just as I thought I ... A: > there's a whole lot of new functions i do not recognize like startod(), startof()... These are C ... | |
| file handling | 3/28/2011 |
| Q: I just want to ask some help with regarding file handling in c++. I am using bloodshed dev and been ... A: To append data to a text file, open the file for output in append mode. For example, this will ... | |
| Expert Opinion | 3/28/2011 |
| Q: In my class, I was asked to write a short essay (and get "expert opions from the internet) about ... A: > Do you have an opinion on this? Yes, I do. Like many creative endeavours which produce ... | |
| please help me out | 3/17/2011 |
| Q: hey vijay thank u for answering the previous quesktion? i have got one more quesktion? i trying to ... A: Suppose the change in cents is 534. 534 / 200 == 2 is the number of 200 cent coins 534 % 200 == ... | |
| c++ help | 3/17/2011 |
| Q: For my assignment I am to write a program that reads a series of integers from the keyboard. I am ... A: > the teacher said to use climits int_min and int_max see: ... | |
| please help me out | 3/16/2011 |
| Q: Please can u help me out i am trying to read (the numbers) from the text file. and it is working ... A: For basics of file input, see: http://www.arachnoid.com/cpptutor/student2.html Find the sum of all ... | |
| Initializing static const arr | 3/14/2011 |
| Q: Can you tell the possible ways of initializing static const string arr[7] with weekday names. And ... A: enum { NDAYS = 7 }; static const std::string arr[ NDAYS ] = { "Monday", ... | |
| difference | 3/14/2011 |
| Q: what is the difference between perfect numbers and perfect square numbers? A: http://en.wikipedia.org/wiki/Perfect_number In mathematics, a perfect number is a positive integer ... | |
| C++ HW ambiguous overload for 'operator cin >> operator | 2/18/2011 |
| Q: I am having trouble declaring my variables. Can you please show me what I am doing wrong. The ... A: You cannot use std::cin to compute a value. #include <iostream> using namespace std; int main() { ... | |
| Dotted decimal to binary conversion. | 2/16/2011 |
| Q: .. i don't know how to convert dotted i made a simple conversion program . can you please help me ... A: Use a std::bitset<> to get the binary representation of a number: #include <bitset> #include ... | |
| C++ Homework using the "if" statement | 2/16/2011 |
| Q: I am having trouble declaring my variables. Can you please show me what I am doing wrong. The ... A: You can not have variable names in C++ like 'Total Number of Seconds'.In particular, white space is ... | |
| C++ newbie need help with fixing code | 2/9/2011 |
| Q: I’m a C++ newbie and I’m taking my 2nd class but, I’m confused as to how to do my homework problem. ... A: 1. First define the two constants that are given: const float stride_length_in_feet = 2.5 ; ... | |
| Use of List with a Singleton Class | 2/8/2011 |
| Q: I am trying to explain a scenario which i tried, I have a singleton class, and when the Instance is ... A: Yes, you would need to synchronize access to the list. This is the classical producer-consumer ... | |
| Printing out the user's input | 2/2/2011 |
| Q: this is what I have so far: // average2.cpp // This program calculates the average of any number of ... A: > how can I get the program to printout the users numbers vertically instead of horizontally? ... | |
| Printing out the user's input | 2/1/2011 |
| Q: this is what I have so far: // average2.cpp // This program calculates the average of any number of ... A: To print out all the numbers entered by the user at the end, you need to store all these numbers ... | |
| C/C++ | 1/22/2011 |
| Q: #include <stdio.h> #include <conio.h> int f1(int x) { return x*x; } int f2(int y) { return 2*y; } ... A: f1(1), f2(2), f3(3) and f4(4) may be evaluated in any order whatsoever. All that we can be sure of ... | |
| A computer mystery | 1/17/2011 |
| Q: Vijayan Hope you've been doing well. Ever since I've purchased a new wireless Microsoft mouse for ... A: From what I can make out (guess) from your description, it is definitely not a driver problem. There ... | |
| Pointer access for 3D Array | 1/2/2011 |
| Q: can we access & modify a 3D array with a single pointer...? Something like this int ... A: > can we access & modify a 3D array with a single pointer...? There are no 3D arrays in C++; however ... | |
| C++ pointers array | 12/31/2010 |
| Q: I wish to grow a dynamic array of pointers, so i thought of copying the pointers to temp pointers ... A: std::size_t array_size = 100 ; int** dyn_array = new int* [array_size] ; for( std::size_t i = 0 ; i ... | |
| C++ | 12/21/2010 |
| Q: data reading from file displays twice(last record) please help Code Is HERE----------- ... A: > #include<fstream.h> > #include<conio.h> > #include<stdio.h> These are not C++ headers; <conio.h> ... | |
| c++ looping | 12/12/2010 |
| Q: Sir, thanks for your last reply. However I have I more question of same looping type but is to be ... A: > find the sum of the array such that C[1]=A[1]+B[5] > C[2]=A[2]+B[4] I presume that you mean, with ... | |
| c++ looping | 12/11/2010 |
| Q: Sir, I have a question related to arrays and loop in c++ its a real simple question you will agree ... A: The first element of an array has the subscript zero (0). The expression a[4] refers to the last ... | |
| c related question | 12/6/2010 |
| Q: write a function to return value of (a+b)2 given a and b are real numbers please sir, help me to ... A: A real number is an abstract mathematical concept; a real number is a value that represents a ... | |
| Binomial Numbers Programming Problem | 11/24/2010 |
| Q: You helped someone with the exact same problem last year and it was a great help to me as well, so I ... A: Change these two lines // ***************************************************** { binomial(int n, ... | |
| C++ arrays/vector | 11/19/2010 |
| Q: i have a program here that is almost finished. But i am in need to implement an array or vector for ... A: > " I would suggest reading the assignment scores into an array" Since the number of assignments ... | |
| RE: | 11/11/2010 |
| Q: My question to you is that inspite of having C++ why does the world still use C, i mean C++ has ... A: Part of the reason is historical - a number of truly great programs, which are still in use have ... | |
| que about Visual C++ | 11/2/2010 |
| Q: R/Sir Colud you please help me in solving the error in my program's comiplation: Below is the ... A: Make sure that you have a file called "resource.h" in the project directory which contains the line: ... | |
| Bisection method | 10/26/2010 |
| Q: Newton method; but i will not be succeed and my equation is (x*x+2x-2). n number of iteration in ... A: Read these articles. Bisection method: http://en.wikipedia.org/wiki/Bisection_method Newton's ... | |
| converting hex to uintvar | 10/20/2010 |
| Q: I'm trying to write code in c++ language using Dev-C++ program. I'm trying to write a program which ... A: The algorithm to perform the conversion is already given: "Representing a value as a uintvar: Write ... | |
| C++ HW help | 10/18/2010 |
| Q: I have to do a program that converts telephone numbers into letters. If the user enters more than ... A: Change the while statement from while (letter != '\n') to while( counter < 7 ) and ... | |
| Different Compilers | 10/16/2010 |
| Q: I don't understand what should be done while using different compilers for c++. I learned C++ in ... A: > I learned C++ in Turbo C++ IDE If you had based your learning on the DOS based Turbo C++ compiler ... | |
| Basic question regarding C programing | 7/30/2010 |
| Q: I am a complete beginner in programing and I have a very basic question. I'm reading one of the ... A: > scanf_s("%d, &a"); scanf_s is not part of the C standard library, it is a Micosoftism. Avoid it. ... | |
| password nd username | 7/27/2010 |
| Q: i am making a project in which i need the output like dis username : digital password : ***** and ... A: There is no standard C++ feature so that characters entered by the user will not be echoed — C++ ... | |
| c++ project title | 6/15/2010 |
| Q: we have just finished taking c++ course and asked to come up with a project title which we are going ... A: Here's a project that requires nothing more than basic knowledge of C++. Predictive Text Input ... | |
| c++ filing | 6/8/2010 |
| Q: i want to know that how can i count the numbers of words, characters ,spaces and lines in a c++ ... A: To read each line, use std::getline() http://www.cppreference.com/wiki/string/getline. For example, ... | |
| pendrive detection program | 6/1/2010 |
| Q: sir i am planning to do my mini project on anti virus. but i have a problem. i should detect the ... A: The way to do this is obviously platform specific. On Windows, you could use the ... | |
| directory | 5/31/2010 |
| Q: i am a student of computer science i will try to open a (txt) file in a directory my code is open in ... A: The standard C++ library (currently) provides no facilities to iterate through a directory and get ... | |
| IPC ( Shared memory ) | 5/24/2010 |
| Q: I would like to learn about shared memory implementaion. I have basic idea about that. But, still i ... A: Here is a tutorial on using shared memory under unix. http://www.cs.cf.ac.uk/Dave/C/node27.html ... | |
| C++ Object | 5/24/2010 |
| Q: In below program, how if condition ( a.data() != "") has succeeded.. if i try ( a != ""), condtion ... A: The function data() returns a pointer (const char*) to the first character in the buffer maintained ... | |
| C++ Linkage Errors | 5/19/2010 |
| Q: I am new to c++ and I am trying to compile a program thats already available. But, while doing so, I ... A: Yes, you do have the header file (.h file) containing the declarations of the exported functions ... | |
| C++ model of PCIe/USB | 5/19/2010 |
| Q: Is it possible to obtain a software model of the industry standard interfaces such as PCI Express or ... A: Yes, the complete specifications are available. Otherwise they wouldn't be standards, would they? ... | |
| Importance of C++? | 5/18/2010 |
| Q: Well to begin with, I admit that my question isnt so clear. But I will try to clarify – I know no ... A: > Can u giv examples and explain middlware . Middleware explained: ... | |
| C# vs Java vs C++ | 5/18/2010 |
| Q: I am a 21 years old guy. Don’t really know much about programming (especially OOP) and software ... A: > a few examples of middlewares built in c++. Or applications that are preferably built in c++. ... | |
| C# vs Java vs C++ | 5/17/2010 |
| Q: I am a 21 years old guy. Don’t really know much about programming (especially OOP) and software ... A: At the outset, let me clarify that I have done most of my programming in C++ and Python. I've just ... | |
| c++ is not fully oops based | 4/22/2010 |
| Q: can we write a program in c++ without creating class? if yes then is it the only reason which makes ... A: > can we write a program in c++ without creating class? Yes, certainly. > if yes then is it the ... | |
| istream | 4/16/2010 |
| Q: I'm working on a program that processes either standard in, or a file, depending on an optional ... A: On thinking about it later, I've realized that there is an even simpler alternative - use an ... | |
| istream | 4/16/2010 |
| Q: I'm working on a program that processes either standard in, or a file, depending on an optional ... A: > Maybe instead of setting up a reference to a stream, I should be setting up a reference to a ... | |
| default constructor | 4/14/2010 |
| Q: #include<iostream> using namespace std; int a(int,int); class p { public: int i; p() { ... A: p ob(p,p,w); Has more than one error. To start with, p and w are classes (types), not objects ... | |
| c++ | 4/13/2010 |
| Q: I don't know how to write a program which can do this: for exemple n=12367 and in output show me ... A: I have already given you the algorithm to do that. int reverse( int number ) { if( number < 0 ) ... | |
| ascii | 4/13/2010 |
| Q: I'm new in c++ and I've writen a program which can produce ascii codes.Could you help me how can I ... A: > I tried do this with two 'for' but it doesn't work. Of course it will work if you set up the ... | |
| c++ | 4/11/2010 |
| Q: I don't know how to write a program which can do this: for exemple n=12367 and in output show me ... A: Use modulo division by 10 to extract the least significant digit from a number. digit = number ... | |
| A problem while running the program | 4/9/2010 |
| Q: I’ve written a program that contains some functions. One of these functions, chseq_r, that I send it ... A: > The function is here: > int* chseq_r(int seq[n][kl][hl]) This is not standard C++ and will not ... | |
| How can i evaluate string expression in if statement? | 4/6/2010 |
| Q: I want to evaluate string expression in if stmt. E.g. int i = 0,j = 2; char * str = "(i == 0) || (j ... A: You will need to write a mini parse to recognize and evaluate the sequence of characters in the ... | |
| Diffrence | 4/4/2010 |
| Q: What is the difference in coding in C++ in windows environment and in linux environment ? If their ... A: > What is the difference in coding in C++ in windows environment and in linux environment ? As far ... | |
| C++ Hashing Table in Data Structure | 3/27/2010 |
| Q: I have some question to ask you regarding this question. This is the question : Write a program to ... A: > Then, i should have at least 4 field of records. > Is it means that i will going to make an output ... | |
| am i correct? | 3/15/2010 |
| Q: here is a question i tried to solve, could you check my solution and let me know if i am close and ... A: > i got no clue how to write a type conversion constructor class A type conversion constructor for ... | |
| am i correct? | 3/14/2010 |
| Q: here is a question i tried to solve, could you check my solution and let me know if i am close and ... A: class point { int x, y; //add access specifier public: point(int a = 0, int ... | |
| pls hellp me with this code.. | 3/12/2010 |
| Q: i want a concise code that does this.. i already tried it but not everything and want to see how i ... A: Here is how I would do it. You may not have as yet studied all the C++ features used in the program. ... | |
| Merge Sort Question | 3/9/2010 |
| Q: Implement the mergesort algorithm in C++ as it sorts the following array into ascending order. List ... A: > How would i go about implementing this solution in c++?. see: ... | |
| Developing A Shell | 3/9/2010 |
| Q: I have an assignment that I need to do, but I forgot a lot of what I knew about C++. I need to ... A: > What exactly is a shell? The term shell originated in the UNIX environment. A shell is a program ... | |
| c++ | 3/6/2010 |
| Q: I'm new in c++ programing.When I write a simple program in Visual C++ and then I add or delete some ... A: I presume that you are using some version of Microsoft Visual C++ IDE. Perform the following steps ... | |
| abit confused | 3/5/2010 |
| Q: suppose i have a class given below: class Person { public : Person(const char *Pname , ... A: The basic idea is right; you do need to do a deep copy (allocate address for the new spaces and copy ... | |
| C++ | 3/3/2010 |
| Q: I need to implement an algorithm for using c++ data structures. I have got two files file1 and ... A: > parse the file1 for each word and identify the corresponding pattern in patterns1 column. This is ... | |
| c++ | 2/28/2010 |
| Q: I was looking through the TI website and some of their code. And I tried to compile it on my ... A: As the precise compiler error message is unknown to me, here's a guess at the most probable cause: ... | |
| Run c++ exe in Linux | 2/23/2010 |
| Q: I have a c++ exe file which successfully run on windows machine. Now i want to reuse the code which ... A: g++ is the "GNU C++ compiler", which is standard with linux. For the basics of hoe to compile and ... | |
| Run c++ exe in Linux | 2/22/2010 |
| Q: I have a c++ exe file which successfully run on windows machine. Now i want to reuse the code which ... A: There is no good way to get the source code from the executable file, and even if it could be done, ... | |
| double link list ; help me.. | 2/21/2010 |
| Q: Can you help me with this code.. this is actually a single link list..I want to change it to be ... A: The next of the node that you are inserting may be NULL. That is, you may be inserting a node at ... | |
| Segmentation fault | 2/21/2010 |
| Q: I wrote this code and when i run i get a "Segmentation fault" and it doesn't tell me what line. Can ... A: I can't see anything else obviously causing the problem. My guess would be that the data in the ... | |
| Segmentation fault | 2/21/2010 |
| Q: I wrote this code and when i run i get a "Segmentation fault" and it doesn't tell me what line. Can ... A: There is an obvious error in the function int registered(FILE* fp, int area) ; while ( (fscanf(fp, ... | |
| Operator Overloading | 2/18/2010 |
| Q: I have doubt on Operator Overloading fucntions Integer& operator+=(const Integer& other) friend ... A: > why i cant do like Integer* operator+=(const Integer* other); Because it violates the ... | |
| concise explanation to this code.. | 2/17/2010 |
| Q: i was studying a c++ code that demonstrates the increment both prefix and postfix operator but i was ... A: Try compiling this code: struct int_array_10 { int_array_10() { for( int i=0 ; i<10 ; ++i ) ... | |
| concise explanation to this code.. | 2/17/2010 |
| Q: i was studying a c++ code that demonstrates the increment both prefix and postfix operator but i was ... A: Let us say we have a function: void our_function( const Array& const_arr, Array& arr ) { ... | |
| concise explanation to this code.. | 2/17/2010 |
| Q: i was studying a c++ code that demonstrates the increment both prefix and postfix operator but i was ... A: > how many constructor is the Time class using? i seen one normal Time(int _hr, int _min) ... | |
| Operator Overloading | 2/17/2010 |
| Q: I have doubt on Operator Overloading fucntions Integer& operator+=(const Integer& other) friend ... A: > will these functions work for passing and returning pointer No. A pointer in a standard built-in ... | |
| Pointer Initializaton | 1/24/2010 |
| Q: I have some basic doubt , Here it is int p=2; int *t=&p; // This will work (Here &p is 3452 ) int ... A: int p=2; int *t=&p; // This will work (Here &p is 3452 ) This is fine. t is a pointer to an int; ... | |
| vectorized MD5 | 12/10/2009 |
| Q: I hate to keep bothering you. I am expecting to have more free time over January and was hoping for ... A: > 1) is the hash function bugged? or am I doing something wrong? I've not really checked. This had ... | |
| Copy constructor | 12/9/2009 |
| Q: 1) what is importance of const. reference object of same class type in copy constructor 2) Why do ... A: A copy constructor is used to make a copy of an object. The copy constructor would be used in the ... | |
| two dimensional arrays | 12/7/2009 |
| Q: I have to take everything out of the main function and put them into functions. I copied and pasted ... A: > I am having trouble figuring out which data types and variables I need to use > when passing the ... | |
| Hello | 12/6/2009 |
| Q: Good evening, i have learned C and C++ and know all the basic operations. my question is : is there ... A: There is no one book that will teach you all about programming in C++ in a professional way. The ... | |
| Learning visual C++ | 12/5/2009 |
| Q: , Would you please share your experience about what is the best way to learn Visual C++. I am ... A: The version of Turbo C++ you are using is an obsolete version (version 1.01) released in 1991. See ... | |
| Learning visual C++ | 12/5/2009 |
| Q: , Would you please share your experience about what is the best way to learn Visual C++. I am ... A: Visual C++ is just another C++ compiler; all that is to learn about using it are the compiler ... | |
| Arrays | 12/3/2009 |
| Q: I have lowered the number of errors down to three. I am not sure if my arrays and statements are ... A: There are just two errors in your code. The function void startArrays( string[], int[], ... | |
| c++ | 12/3/2009 |
| Q: int main(int argc, char *argv[]) { for(i=0;i<argc;i++) {cout<<"\tArgument #"<<i<<": ... A: I've already answered this in your first question; reproduced here for convenience: To also convert ... | |
| c++ | 12/3/2009 |
| Q: int main(int argc, char *argv[]) { for(i=0;i<argc;i++) {cout<<"\tArgument #"<<i<<": ... A: > can u tell me how to declare a new in a 2D array of a size entered by user but the columns are ... | |
| c++ | 12/2/2009 |
| Q: int main(int argc, char *argv[]) { for(i=0;i<argc;i++) {cout<<"\tArgument #"<<i<<": ... A: for(i=0;i<argc;i++) {cout<<"\tArgument #"<<i<<": "<<argv[i]<<endl;} The first argument argv[0] ... | |
| explanations about the code pls | 11/27/2009 |
| Q: please, i seen this queue implementation in a textbook and i am abit confused about a statement in ... A: /*the next statement is what i really dont understand*/ if(tail+1==head || (tail+1==SIZE ... | |
| What is better than RichEdit 4.1? | 11/27/2009 |
| Q: I asked this question before, but I am still not clear of the answer. I prefer that instead of ... A: > it seems that is the latest version. Microsoft Office always has the more recent (better with ... | |
| RichEdit | 11/26/2009 |
| Q: I asked this question before, but I am still not clear of the answer. I prefer that instead of ... A: > What is the latest RichEdit version that can be used freely by programmers to make software that ... | |
| passing values by reference | 11/24/2009 |
| Q: My program is almost finished ,but I am confused on how to pass values by reference through ... A: As a programmer, just think of a reference as another name (an alias) for a variable. For example, ... | |
| what could be wrong with my code? | 11/24/2009 |
| Q: please, when i compile and run this code, it crashes. i am guessing it has to do with with my ... A: Yes, it has to do with the constructor. In this code fragment, char *str; ... | |
| freind functions | 11/22/2009 |
| Q: i have some basic doubt. i have seen some example programms on operator overloading. why operator ... A: > can you tell if there is any relation of operator overloading and freind functions? Overloading ... | |
| C++ file handling | 11/17/2009 |
| Q: e keyword) stored in one file with the program stored into another file .But the probelm is that i ... A: These are not standard c++ headers #include<stdio.h> #include<conio.h> #include<process.h> ... | |
| vectorized MD5 | 11/15/2009 |
| Q: I wasn't sure if I needed to message you before you could message me for the last question. And I ... A: I haven't looked into it as yet. I was under the (perhaps mistaken) impression that it was not ... | |
| A question about bank transactions | 11/15/2009 |
| Q: first of all I would like to apologise that I am writing to you a private message. But I believe ... A: Yes, that should be fine. One issue that you may want to address is that of concurrency - if many ... | |
| A question about bank transactions | 11/15/2009 |
| Q: first of all I would like to apologise that I am writing to you a private message. But I believe ... A: The structure of your client code is: 1. create a socket => sock = socket( AF_UNIX, SOCK_STREAM, 0 ... | |
| what is wrong with this? | 11/14/2009 |
| Q: i am not sure but could it be that i already deleted the memory to store the object cuz i cant ... A: The function int neg(dyna ob) takes its parameter by value, it gets a copy of the ... | |
| what is the difference between this two? | 11/13/2009 |
| Q: please, here is a working code that displays the binary bit pattern, byte by byte using a union. ... A: here is a working code that displays the binary bit pattern, byte by byte using a union. Well, the ... | |
| RichEdit 5.0 | 11/10/2009 |
| Q: I have a programmer who is developing a C++ for me and is doing it in an older version of RichEdit ... A: The versions of Rich Edit included in the Microsoft Windows distribution are freely reusable; their ... | |
| Im lost | 11/9/2009 |
| Q: I have taken an online course and thus found out for myself that im not all that good with ... A: your masterpiece has most of the things correctly done, except change #include < iostream > to ... | |
| c++ | 11/8/2009 |
| Q: could u pls help mi.i will be so greatly appericated for all the help frm u.my problem is tat i do ... A: You need to validate that the string balanceText contains a valid positive number. Write a function ... | |
| c++ | 11/8/2009 |
| Q: could u pls help mi.my onli problem is the Type.i do knw which part of the code is wrong.i dun knw y ... A: In the function Customer::setCustomer, you need to accept the CustomerType and set the member ... | |
| Perfect Number | 10/22/2009 |
| Q: A perfect number is a number which sum of all its divisors equals the number. for example for 6, we ... A: A Mersenne number is a positive integer that is one less than a power of two. That is, a number of ... | |
| Reference operator | 10/20/2009 |
| Q: Can you please tell me "importance of returning reference in operator overloading ? with example" ... A: Functions can be declared to return a reference type. There are two reasons to make such a ... | |
| C program | 10/19/2009 |
| Q: i have a code running but i want to know, how do i run the program and in the end it asks the user ... A: Put the code for your program in a simple loop, which repeats if the user answers 'y' to the ... | |
| vectorized MD5 | 10/19/2009 |
| Q: Sorry. That was a stupid oversight on my part. The code is here: ... A: You need to write a main() function, and the linker error will go away - something like this. Not: ... | |
| Software Design | 10/19/2009 |
| Q: What makes for good software design? A: This is a really open-ended question, isn't it? Somewhat like "What is the meaning of life?". A ... | |
| hi | 10/17/2009 |
| Q: #include <iostream> #include <cctype> #include <iomanip> #include <cstdlib> can you explain what ... A: #include is a preprocessor directive. As the name implies, the preprocessor operates on the source ... | |
| classes in C++ | 10/12/2009 |
| Q: I would like to ask you please about classes in C++. I'm trying to basically work with two classes ... A: Ok. This is homework, isn't it? I'll help you get going, but you really need to try and complete ... | |
| Memory allocation | 10/8/2009 |
| Q: Can you please clarify me what are diff segments? what are the variables stored in these segments? ... A: C++ does not specify anything about 'segments', 'RAM', 'ROM' etc. However, in practice, segments and ... | |
| Memory deallocation | 10/7/2009 |
| Q: i have one basic doubt , in C++ we will delete the dynamically allocated object but even for normal ... A: Where an object (variable) is stored and the life time of the object (variable) is determined my the ... | |
| Linker Error | 10/7/2009 |
| Q: Please, tell me what I'm doing wrong with this code... On the Main.cpp file: #include ... A: In the definition of classes Personagem, Jogador1 and Jogador2, you have declared constructors. But ... | |
| hi | 10/3/2009 |
| Q: For %d minutes: your bill is $%.2f ",hours,minutes,bill);? #include <iostream> #include <cctype> ... A: > where would i put printf You do not need printf at all as you are using the C++ stream library ... | |
| result in decimal order | 9/30/2009 |
| Q: i want answer in desimal digits. for example. i product two large numbers like (22222 * 33333 = )it ... A: You can easily format your output so that fields align correctly, floating point numbers have the ... | |
| constructors | 9/24/2009 |
| Q: i have a questions about 'constructors',i actually don't know when should i use them,for example in ... A: I would prefer one of: a. Get 'gradesArray' by using cin. And then send it to constructor. b. ... | |
| Object Oriented Methodology | 9/23/2009 |
| Q: Difference Between Following Two Statements: String Name = "Radhika"; String Name("Radhika"); A: Assuming that 'String' is a class which has a (non-explicit) constructor which can be invoked using ... | |
| Padding | 9/23/2009 |
| Q: struct X { char ch; int i; char a ; char b; long l; }; First the compiler allots a 4-byte location ... A: C++03 provides no standard keyword or function for querying the alignment requirements of types. ... | |
| Padding | 9/22/2009 |
| Q: struct X { char ch; int i; char a ; char b; long l; }; First the compiler allots a 4-byte location ... A: The C/C++ Standards define alignment as a "requirement that objects of a particular type be located ... | |
| c++ | 9/22/2009 |
| Q: when i m running this code it is reversing bits properly for 5 or less than 5 number of bits. it is ... A: Probably because the maximum value of an int in the C++ implementation that you are using is limited ... | |
| Constructors | 9/21/2009 |
| Q: i want to inherit the base class constructors in to my derive class but its failing. struct B1 { ... A: As per the current International Standard for C++, base class constructors can not be inherited ... | |
| SSE-accelerated MD5 | 9/20/2009 |
| Q: A four-fold improvement? Yes, I would be very happy with that :) A four-fold improvement over the ... A: The program computes the MD5 for 64 million bytes of message data for both the non-sse scalar ... | |
| SSE-accelerated MD5 | 9/20/2009 |
| Q: A four-fold improvement? Yes, I would be very happy with that :) A four-fold improvement over the ... A: > What were the benchmarks on your machine? So could you send me some benchmarks? I had given the ... | |
| OS | 9/20/2009 |
| Q: can a computer work without an Operating System? if yes, how? A: An operating system provides an interface between the hardware and user. It provides management and ... | |
| SSE-accelerated MD5 | 9/19/2009 |
| Q: A four-fold improvement? Yes, I would be very happy with that :) A four-fold improvement over the ... A: Let me clarify. MD4 and its successors have been designed with 32bit efficiency in mind. The MD5 ... | |
| SSE2-accelerated MD4 | 8/29/2009 |
| Q: I need help implementing an SSE2-accelerated MD4 implementation. I found one that I think may work ... A: > Code is a little convoluted Yes. And I got differences in the MD5 hash (from the results from the ... | |
| heap | 8/27/2009 |
| Q: what is the "concept of heap in c++"?? A: In computer science, a heap is a specialized tree-based data structure that satisfies the heap ... | |
| sequential file | 8/26/2009 |
| Q: now i working on searching in sequential file with the key 'ID'.i've used binary_search function. ... A: The problem is because after the input of records, std::cin is in an end-of-file state. Any attempt ... | |
| sequential file | 8/26/2009 |
| Q: now i working on searching in sequential file with the key 'ID'.i've used binary_search function. ... A: There are several issues with this code. 1. The file is first opened for output in append mode ... | |
| some question about c++ | 8/26/2009 |
| Q: what is the difference between turboc++ & borlandc++ ? A: These are the main differences: Turbo C++ Exlorer 2006 (called Turbo hereafter) comes with the ... | |
| Pointers | 8/25/2009 |
| Q: How are you.I have some doubts in useing pointers. 1.For every pointer i have to deallocate the ... A: 1.For every pointer i have to deallocate the memory or is it for only the pointers who are created ... | |
| sequential file | 8/24/2009 |
| Q: I've written a sequential file that can create a file and adding data to it,i'm trying to write a ... A: > what exactly does the 'path' argument do? 'path' is the pathname of the file eg. ... | |
| some problems about the friend function in the templated class | 8/24/2009 |
| Q: I have designed a templated class about a binary tree which includes a friend functions.But it calls ... A: when the compiler sees the friend declaration in class definition friend void ... | |
| sequential file | 8/23/2009 |
| Q: I've written a sequential file that can create a file and adding data to it,i'm trying to write a ... A: > i think the solution is to put all the records to an array from the file that i have created > ... | |
| c++ | 8/23/2009 |
| Q: on my syllabus it says"to excute c++ programming assignments some assignments will require use of ... A: If your course has specified some prior knowledge as a prerequisite, that is what you should know ... | |
| c++ | 8/23/2009 |
| Q: on my syllabus it says"to excute c++ programming assignments some assignments will require use of ... A: To program in portable C++, you do not need unix - any conforming C++ compiler would do. If the ... | |
| URL check | 8/23/2009 |
| Q: How are you? I'm trying to write a program that, among other things, needs to validate a website. ... A: The standard C++ library does not provide any facility to do this. You have to use a third-party ... | |
| c++ | 8/23/2009 |
| Q: could u pls help mi,i realli need your help.i dun knw which part of the code is wrong.when I input ... A: There are several logical errors in your program - they would have generated compiler diagnostics, ... | |
| Student Detail Recording System | 8/21/2009 |
| Q: i am required to develop a system to record details of student. This system should be implemented ... A: a. First define a structure to hold the student information, like this: #include <string> struct ... | |
| SSE2-accelerated MD4 | 8/20/2009 |
| Q: I need help implementing an SSE2-accelerated MD4 implementation. I found one that I think may work ... A: The link that you posted gives a 404 NOT FOUND Here are two C++ crypto libraries that I've used. ... | |
| Static Function... | 8/19/2009 |
| Q: Vijayan, Have small query about static function and constructor. Basically, static function can ... A: A static member function is not an operation on an object instance, it can be called without an ... | |
| strings | 8/12/2009 |
| Q: please tell me if i want to use modulas and division operation on strings ten how can i do it. when ... A: If the C style string contains only numeric digits, here is one way (error checking has been elided) ... | |
| strings | 8/12/2009 |
| Q: please tell me if i want to use modulas and division operation on strings ten how can i do it. when ... A: c-style strings are just arrays of characters, terminated by a null character. Among the built in ... | |
| function arguments | 8/12/2009 |
| Q: i have designed two functions like void verify(Hvrbuffer *message)--> this will be work when ... A: In either case, memory for an object of type is not allocated Hvrbuffer is not allocated or ... | |
| logical problem in c++ | 8/11/2009 |
| Q: when i am running this code it is not taking input of year.why is this happening and how can i solve ... A: > #include<iostream.h> There is no such header in standard C++. use #include <iostream> using ... | |
| c++ | 8/9/2009 |
| Q: please give me more information about switch case.is it possible to call a function with object in ... A: switch(ch) { case 1:rd.getdata_st(); break; case 2:rd.getdata_t(); ... | |
| why is this wrong? | 8/8/2009 |
| Q: below i have a working code (version A). if i only change a certain part of the code (version B), i ... A: > pls, where is that to b included in my programme bcuz i dont know where to affix those. Just ... | |
| why is this wrong? | 8/8/2009 |
| Q: below i have a working code (version A). if i only change a certain part of the code (version B), i ... A: #include <string.h> There is no such header in ISO C++. Use #include <cstring> instead. The ... | |
| c++ | 8/3/2009 |
| Q: could u pls help mi.hw should i truncate a decimal value into a whole number.example:27.56,round off ... A: When a floating point value is converted to an integer type, the conversion truncates - that is, the ... | |
| c++simulator | 8/1/2009 |
| Q: could u pls help mi.i realli desperate for your help.could u pls c my code,i'm nt sure whether i am ... A: Here is a snippet which will give you an idea of what you have to do - this deals with just the ... | |
| c++simulator | 8/1/2009 |
| Q: could u pls help mi.i realli desperate for your help.could u pls c my code,i'm nt sure whether i am ... A: the running of a discrete-event simulation program is represented as a chronological sequence of ... | |
| more on allocation | 7/31/2009 |
| Q: You say that this code below works in C and C++ alike. But it will only work with int or float, not ... A: It will compile in C++ with any pointer. In both C and C++, it is semantically incorrect. Correct ... | |
| dynamic allocation | 7/31/2009 |
| Q: How are you? I know how to declare dynamically an array of objects of class MyClass: MyClass ... A: In standard C and C++, the number of elements in an array has to be a constant known at compile ... | |
| dynamic allocation | 7/31/2009 |
| Q: How are you? I know how to declare dynamically an array of objects of class MyClass: MyClass ... A: > I know how to declare dynamically an array of objects of class MyClass: > MyClass **array=new ... | |
| Class design | 7/30/2009 |
| Q: class X1 { .... }; class X2 { ... }; class X3 { public : X1 *x1; X2 x2; void test (X2 ... A: > In this method void test (X2 *x2, X1 &x1); for X2 i can allocate the memory dynamically , but ... | |
| Class design | 7/29/2009 |
| Q: class X1 { .... }; class X2 { ... }; class X3 { public : X1 *x1; X2 x2; void test (X2 ... A: The member X3::x1 is a pointer. This pointer points to an object of type X1 (which is outside the X3 ... | |
| C++ Memory management | 7/28/2009 |
| Q: Can you plz tell me how the memory management will happen in C++ ?. we have stack,heap , code ... A: Functions (code) is stored in a part of memory which is separate from that of variables (also called ... | |
| doubt in function argument passing | 7/28/2009 |
| Q: 1."Pass by value , Pass by reference ,Pass by address in these 3 types of parameter passing, which ... A: Only pass by value creates a new object of that type. Pass by address passes a copy of the address, ... | |
| when to use pointers & Referencs | 7/27/2009 |
| Q: I have some basic questions. I have worked in java for 1 year.Now i moved to C++, Here i am getting ... A: When i have to create pointer object and normal object? Use a normal (named) object in all ... | |
| fibonacci | 7/23/2009 |
| Q: i've written a nonrecursive fibonacci function and my purpose is to finding the largest fibonacci ... A: When there is an integer overflow, the bits overflow into the sign bit of the integer and it becomes ... | |
| default arguments | 7/21/2009 |
| Q: i have a question about default arguments in c++. could you plz tell me what's the implication ... A: Any parameters after a parameter having a default argument value must have default argument values. ... | |
| allocation | 7/17/2009 |
| Q: I have this loop in my program where I repetedly create an array of pointer to class MyTree ... A: You do not have to, and you can not, do anything to release the memory occupied by the array - it ... | |
| Data Types | 7/16/2009 |
| Q: I'm having some trouble understanding some data types and operators in C++, can u help answer these ... A: why j + 100 is discarded when 999 + j is remained, The language specification states "expressions ... | |
| Data Types | 7/16/2009 |
| Q: I'm having some trouble understanding some data types and operators in C++, can u help answer these ... A: 1) What is the advantage of enumeration? Why using it when I can just use integer to replace it? An ... | |
| still on the struct and class problems | 7/9/2009 |
| Q: ok, i will try to write the functions and let u see them, now i get to understand something totally ... A: There is no difference at all except for the default access specifier. Members of a struct are ... | |
| definition of a Class | 7/9/2009 |
| Q: coould you help me out with this problem by partially giving functions to be included in the class ... A: You can have constructors as well as access specifiers (you can have anything that you could have in ... | |
| definition of a Class | 7/8/2009 |
| Q: coould you help me out with this problem by partially giving functions to be included in the class ... A: A struct and class are synonyms in C++, they differ only in the default access specifier. from the ... | |
| definition of a Class | 7/8/2009 |
| Q: coould you help me out with this problem by partially giving functions to be included in the class ... A: something like this, perhaps. struct entry { entry( const char* wd, const char* expl ) ; // ... | |
| hash tables, fast hash lookup | 6/15/2009 |
| Q: In follow up to the question I asked you earlier ("fast vector lookup"): Yes, I was able to get ... A: You need to use the struct sixteen_byte_hash for *both* insert and lookup. To make your task easier, ... | |
| enumuration values | 6/12/2009 |
| Q: could you plz tell me that are enumuration values coerced to integer?or are any other types coerced ... A: An enumerated type is used to express the idea that a variable will be used for a specific purpose ... | |
| hash tables, fast hash lookup | 6/5/2009 |
| Q: In follow up to the question I asked you earlier ("fast vector lookup"): Yes, I was able to get ... A: First, use a structure to hold your 16 byte (128 bit) digests. enum { NBYTES = 16, NWORDS = NBYTES ... | |
| fast vector search | 6/4/2009 |
| Q: This is a follow up to a question I asked you earlier about reading wordlists into memory. Yes, I ... A: > dense_hash is just a super-fast vector. No, dense_hash is a super-fast hash table implementation. ... | |
| data structures | 6/3/2009 |
| Q: How are you? Thank you very much for taking questions. I am experimenting with linked lists and ... A: You could use a linked list instead of an array (as in your earlier code). If the only issue is ... | |
| variables definition | 6/2/2009 |
| Q: could you please tell me about the difference between data member and class variable and also ... A: #include <iostream> struct account { double balance_amount ; // instance data member variable ... | |
| c++ | 5/31/2009 |
| Q: my problem is the makeHeap function,i gt many errors,which i do nt understand.could you pls help ... A: To be const-correct, void printList(sales *arr, int num) ; should be void printList( const sales* ... | |
| c++ | 5/31/2009 |
| Q: my problem is the makeHeap function,i gt many errors,which i do nt understand.could you pls help ... A: you have a struct, which, IIRC, is this: struct sales { char id[10]; float sales; }; I think ... | |
| c++heapsort | 5/29/2009 |
| Q: Write a main program that reads in the data, populating an array and sorts the array (in descending ... A: It is much easier to write the function recursively. struct sales { char id[10]; float sales; ... | |
| data structures | 5/28/2009 |
| Q: How are you? Thank you very much for taking questions. I am experimenting with linked lists and ... A: The problem is in your set_left() and set_right. These need to modify the variable of the caller. ... | |
| Computer Studies pseudocode algorithm | 5/27/2009 |
| Q: i recently just wrote a computer studies exam where i was asked to write a simple algorithm in ... A: You require only one loop. init: sw_flights <- 0 kn_flights <- 0 fa_flights <- 0 loop: ... | |
| data structures | 5/27/2009 |
| Q: How are you? Thank you very much for taking questions. I am experimenting with linked lists and ... A: if we need a variable number of objects that can only be determined during run-time, we have to ... | |
| f.obj : error LNK2019 | 5/26/2009 |
| Q: Vijayan, I'm working on a project for a C++ class and it will compile, but I'm getting linking ... A: A linker error LNK2019 means that there is at least one unresolved external symbol; you have ... | |
| fast vector search | 5/26/2009 |
| Q: This is a follow up to a question I asked you earlier about reading wordlists into memory. Yes, I ... A: Preliminary investigations suggest that a google dense_hash_set is a good choice as a hash table ... | |
| fast vector search | 5/25/2009 |
| Q: This is a follow up to a question I asked you earlier about reading wordlists into memory. Yes, I ... A: Ignore any earlier reply you might have got - I think I hit the wrong key by mistake. "the goal of ... | |
| c++linked list | 5/23/2009 |
| Q: my problem is still the insetStudent function,still many errors.and there is also an error in the ... A: #include<iostream> #include<fstream> // ************** modified ******************** // removed // ... | |
| c++linked list | 5/23/2009 |
| Q: my problem is still the insetStudent function,still many errors.and there is also an error in the ... A: I repeat: Modify the first declaration of insertStudent() from void insertStudent( studentNode*& ... | |
| c++linked list | 5/23/2009 |
| Q: my problem is still the insetStudent function,still many errors.and there is also an error in the ... A: -In constructors 'studentNode::studentNode char*,int,int,int,studentNode*) -18:error:anachronistic ... | |
| c++linklist | 5/23/2009 |
| Q: my problem is the insertStudent.hw do i change it,for the studentid it has to be char *no instead of ... A: > i hv nv learn tis code (explicit) at all.is there another way of writing the code without the ... | |
| c++linklist | 5/22/2009 |
| Q: my problem is the insertStudent.hw do i change it,for the studentid it has to be char *no instead of ... A: The function printStudentList() is easy - just iterate through every studentNode in the list, ... | |
| c++linklist | 5/22/2009 |
| Q: my problem is the insertStudent.hw do i change it,for the studentid it has to be char *no instead of ... A: Use a std::string to store the student id. see http://www.cprogramming.com/tutorial/string.html ... | |
| c++linkedlist | 5/20/2009 |
| Q: Write a C++ program to read in a set of data from a text file which contains the student number, ... A: Make the student number an int, not a char. Write a constructor for studentNode. Write a convenience ... | |
| Header file | 5/18/2009 |
| Q: I have a question about the below,can you tell me whats the problem with it that every time i ... A: The error is self-explanatory - the preprocessor can not find the file "GradeBook.h" Generally, it ... | |
| display number structure?? | 5/16/2009 |
| Q: In my array arr={10,20,30,40} i want to display output like 10 20 30 40 10+20 10+30 10+40 20+30 ... A: The simplest way is to write a recursive function. for example: #include <iostream> #include ... | |
| display number structure?? | 5/16/2009 |
| Q: In my array arr={10,20,30,40} i want to display output like 10 20 30 40 10+20 10+30 10+40 20+30 ... A: In a C++ program, prefer using C++ functions for io. Avoid <conio.h>, it has never been a standard C ... | |
| getline() | 5/15/2009 |
| Q: my question is about the code below.when i run the programme after that i enter nameofcourse why it ... A: std::istream& std::getline( std::istream& stm, std::string& str, char delimiter = '\n' ) ; reads a ... | |
| std | 5/14/2009 |
| Q: i have a question about using std in c++ programming,for instance using 'std::cout' , 'std::cin' or ... A: If the only programs that were ever written were only by one person, things like namespaces probably ... | |
| writing at specific locations in a .txt file using c++ | 5/13/2009 |
| Q: I have a text file(.txt), it contains 10000 lines (decimal values with + and -) continous of fixed ... A: The simplest way to do this is: a. read the original file line by line b. write out each line read ... | |
| FILE | 5/2/2009 |
| Q: i have written the code below,it works correctly,but my question is that why when i delete the line ... A: fopen("c:\\text.txt","r+"); opens the file for reading and writing. The stream is positioned at ... | |
| reading wordlist words into memory | 4/30/2009 |
| Q: I am writing a program which will access a wordlist file and check every word in that file to see if ... A: > Am I correct in understanding that the entire wordlist has been loaded into memory? Yes. > The ... | |
| reading wordlist words into memory | 4/26/2009 |
| Q: I am writing a program which will access a wordlist file and check every word in that file to see if ... A: > The wordlist file has millions of words, and I cannot be sure > of the length of them (thus char ... | |
| c++ | 4/23/2009 |
| Q: could you pls help mi!!!i do nt knw which part of my code went wrong.wen i run the program,it onli ... A: > i want the text file to be able to read a blank space. You can leave a blank space space in ... | |
| c++ | 4/23/2009 |
| Q: could you pls help mi!!!i do nt knw which part of my code went wrong.wen i run the program,it onli ... A: In you data file, ACCADDEBBABAADCCAEAA Jack ACBADDE BACBADCBAEBA Angie CCBAEEA BBACDDEDEBCC ... | |
| Do While Loop Problem | 4/23/2009 |
| Q: To start off, i'm very new so this could be an easy fix. I use dev C++. let me just put the code. ... A: change do { // ..... } while( answer != "Raleigh" || answer != "raleigh" ) ; to ... | |
| horner's method | 4/21/2009 |
| Q: i have a project in c++,it is about horner's method,and the program should run it. but i don't know ... A: Horner's method is a technique for evaluating polynomials. It uses nested multiplication instead of ... | |
| loop | 4/20/2009 |
| Q: I was the following... Write a program that displays a menu with the following choices to the user. ... A: revision: change to public to find the largest number entered by a user, you do not need to store ... | |
| call by refrence | 4/17/2009 |
| Q: i have a question about calling variables in functions could you plz tell me what's the diffrence ... A: > the address of 'a' will be change the address of 'a' will never change. once an object is ... | |
| data structures | 4/15/2009 |
| Q: i actually need to make a project in which i have to make a programme in c++ in which i have to ... A: A good place to learn about a simple way of doing this is to read the section on implementing ... | |
| i need help in my assignment | 4/11/2009 |
| Q: my assignment talking about string manipulation and he needs a menu of 11 : 1. Inputting new string ... A: 1. Inputting new string assuming that 'Inputting new string' means read a line of text, use ... | |
| file in c | 4/9/2009 |
| Q: i want to learn about file code,i wrote the fallowing code it doesn't have error but doesn't work ... A: > it doesn't have error but doesn't work that it compiles is no guarantee that it will not fail at ... | |
| dev c++ | 4/9/2009 |
| Q: i am a student trying to learn dev c++ and i am having trouble making a program. the program ... A: first declare an array that can hold six numbers enum { ARRAYSIZE = 6 } ; int numbers[ARRAYSIZE] ; ... | |
| C SOLUTION | 4/5/2009 |
| Q: recently i came across this question in our campus interview. which i dint clear. they dint gave the ... A: "Fancy algorithms are slow when n is small, and n is usually small. Fancy algorithms have big ... | |
| question | 4/2/2009 |
| Q: write a program that reads in a sentence of up to 100 characters and outputs the sentence with ... A: to read in a sentence, read character by character till a period is encountered. std::string ... | |
| a question | 4/1/2009 |
| Q: i want to write a programme that shows all combination of 'n' variable,for instance for two variable ... A: > for instance for two variable 'a' and 'b',it prints:"aa","ab","ba","bb" "ab" is a different ... | |
| C++ | 3/18/2009 |
| Q: I need to find all the numbers that are perfect square between 1000 and 9999 and the first 2 digits ... A: to find all numbers between 1000 and 9999 which are perfect squares, a. determine the integer a ... | |
| floating point value | 3/18/2009 |
| Q: I want to know how can we print only the magnitude of any floating point value that is assigned to a ... A: this is easy, isn't it? one way is to print -a if a is negetive, +a otherwise. another way is to ... | |
| query in c++(about random() function) | 3/12/2009 |
| Q: what output will this code produce? main() { randomize(); char ... A: > what output will this code produce? a cascade of compiler errors. error: ISO C++ forbids ... | |
| C++ While Loop | 3/10/2009 |
| Q: I am trying to build a shopping program for my daughter but I'm stuck! Could you help me out? Here's ... A: > What I would like to do is form a loop ... up until a negative price value is entered the simple ... | |
| I/O port programming | 3/7/2009 |
| Q: How are you? I would like to start learning I/O port programming. I'd like to write software that ... A: there is a fair amount of literature available. these are some books that have been well spoken of: ... | |
| hello | 3/5/2009 |
| Q: 1-I want to know why we put constant in this line(char* dest,const char*src) although if we dont put ... A: > why we put constant in this line strcpy( char* dest, const char* src ) because the source of the ... | |
| c++ not working | 3/5/2009 |
| Q: actually this question not regarding code. i copied a c++ software from my friend a few days ago. ... A: > can you tell me how to fix the problem? i might be able to tell you that if i know a. what the ... | |
| Command line | 3/3/2009 |
| Q: Could you please critique my code? It keeps getting wrong output, and I don't know why. It is a ... A: one immediate problem i can see in your code is: for (int i=0; i<=n; i++) { if( i%n == 0 ) ... | |
| c++ & c# | 3/3/2009 |
| Q: Drawbacks of exception handling in c++ & c#. A: i am not a C# programmer; so the following comments are for C++. in any case, languages like C# and ... | |
| Priority | 3/2/2009 |
| Q: By priority of each expression I mean for instance '*' has a higher priority than "-". I appreciate ... A: > The problem is that I don't know how to come up with the code that checks the priority... that is ... | |
| Priority | 3/2/2009 |
| Q: By priority of each expression I mean for instance '*' has a higher priority than "-". I appreciate ... A: your comments indicate that you are on the right track; to take care of precedence, you need to ... | |
| Priority | 3/1/2009 |
| Q: By priority of each expression I mean for instance '*' has a higher priority than "-". I appreciate ... A: let us say we have a grammar in which integer numbers and the binary operators +, -, * and / are the ... | |
| My new programming language | 2/28/2009 |
| Q: Sir, I'm creating a new programming language using C++. The idea is to write a C++ program that can ... A: > When the program is executed for the first time it shows errors for > the correct program & it ... | |
| Counting Inversions | 2/24/2009 |
| Q: I am trying to find the number of inversions using merge sort, but I am having trouble counting up ... A: well, the function MergeSort does seem to return the number of inversions. i haven't gone through ... | |
| C++ classes | 2/22/2009 |
| Q: I am trying to do a C++ program with 2 classes Employee and Company. Employee has a member function ... A: the array employee_collection contains *pointers* Employee objects, not the objects themselves. so ... | |
| C++ classes | 2/21/2009 |
| Q: I am trying to do a C++ program with 2 classes Employee and Company. Employee has a member function ... A: > Employee has a member function called getempID ... > char* Employee::getempID() > { > return ... | |
| C++ | 2/16/2009 |
| Q: I have tried to develop a C++ program that read information of employees using project, I only ... A: a. have an array of 100 employees and a variable to hold the number of employees. enum ... | |
| c++text file | 2/13/2009 |
| Q: the program prompt user to enter the filename of a text file and number of columns(width).It will ... A: > All lines will terminate with a Carriage Return(CR) and Line Feed(LF) this is incorrect (at the ... | |
| Stack question | 2/13/2009 |
| Q: I asked you a Java Q before and you got me started pretty well. I've already asked the Java people ... A: right from jdk 1.0, java has has a built-in stack class java.util.Stack ... | |
| C++ converting roman to decimal | 2/13/2009 |
| Q: In Programming Exercise 1 in Chapter 11 (D.S. Malik, 4th edition), we defined a class romanType to ... A: Rules regarding Roman numerals sometimes state that a symbol representing 10^n may not precede any ... | |
| extract characters after a space in a string | 2/7/2009 |
| Q: How do I extract a word after a space in a string? A: the simplest way is to use a stringstream. for example, #include<string> #include<iostream> ... | |
| doubt in c++ | 2/7/2009 |
| Q: How to extract contents of a file in c++ using linux compiler? A: firstly, C++ conforms to an International Standard and io can be performed in a platform independant ... | |
| Divisors program confused? | 2/6/2009 |
| Q: I want to write a program that finds how many divisors a number has, and displays what those numbers ... A: to break up the problem into two smaller subproblems: problem a. check if a number is the divisor ... | |
| problem in c++ | 2/6/2009 |
| Q: what to do if an error "unable to open file iostream .h" is displaying and how to change or correct ... A: <iostream.h> is not (and never has been) a standard C++ header. many compilers still support it ... | |
| Beginning a Programming language | 2/6/2009 |
| Q: I am still in High School and would like to learn a programming language. I feel it would help me ... A: I would recommend lisp. You are still in high school, you would get an opportunity to learn ... | |
| set method | 2/5/2009 |
| Q: This would be my last question I promise :) Again having in mind the following are my data members: ... A: you need to adjust the size to reflect the new element which has been added. public void ... | |
| TrimToSize() method | 2/5/2009 |
| Q: You helped me earlier with my Java code a little. I have asked the java quys but they haven't got ... A: trimming the array should a. create a new array of *size* (not objects.length-size) elements b. copy ... | |
| Tree Templates | 2/4/2009 |
| Q: we are working on Multi Target Tracking Project, for that we need to create some tree templates ... A: well, what kind of a tree do you want? here is an AVL-Tree implementation: ... | |
| compiler of C++ | 2/3/2009 |
| Q: what is the compiler of C++ language? does C++ uses any interpreter also? is the compiler and ... A: Turbo C++ is a C++ compiler and integrated development environment (IDE) from Borland. its compiler ... | |
| compiler of C++ | 2/2/2009 |
| Q: what is the compiler of C++ language? does C++ uses any interpreter also? is the compiler and ... A: > what is the compiler of C++ language? see: http://en.wikipedia.org/wiki/Compiler C++ is a ... | |
| file | 2/2/2009 |
| Q: i have writen a class and then i have writen another class using an object of the first class! now i ... A: use a std::ofstream to write to a file and a std::ifstream to read from a file. see: ... | |
| request | 2/2/2009 |
| Q: sir, i m researh scholar pursuing phd. i m working on object-oriented software development. i m ... A: you could freely pick up this information for any open source project. i presume that to really ... | |
| Array of Objects | 2/2/2009 |
| Q: From your profile I kind of guessed that you may probably know Java as well! so I have a Java ... A: > I kind of guessed that you may probably know Java as well! i am not a java programmer; i do not ... | |
| lottery numbers | 1/31/2009 |
| Q: It has been a while since i have done any work with c++ and i was wondering if you could help me out ... A: represent each ticket as an array of 6 numbers. and since we have 150 tickets, have an array ... | |
| problem in reading from a file | 1/29/2009 |
| Q: I am making a project for my practicals which is a game in which the admin can enter questions and ... A: #include<fstream.h> #include<conio.h> #include<stdlib.h> #include<stdio.h> #include<string.h> none ... | |
| Algorithm | 1/26/2009 |
| Q: If a problem belongs to P class then can it belong to NP class? Answer according to current research ... A: The typical question in in computational complexity theory is, "As the size of the input to an ... | |
| Unix like programming help needed | 1/21/2009 |
| Q: I need help in the following please: I know that in unix like systems there is only one ALARM ... A: Signals are notifications sent to a process in order to notify it of various events. they interrupt ... | |
| about writing and reading to disk | 1/21/2009 |
| Q: suppose i have a class Person. that prints a person's name and the number of brothers that person ... A: instead of using std::cin for reading and std::cout for writing formatted output, use a ... | |
| divide and Conquer Algorithm | 1/21/2009 |
| Q: I have created a Recursive and NonRecursive algorithm for calculating the sum of integers. I've ... A: The basic idea behind a recursive function is that you can solve a problem by breaking it into ... | |
| more efficient? | 1/20/2009 |
| Q: could you tell me which one is more efficient and why please? if (a && b) f1(); else f2(); or if ... A: the two forms are not equivalent. form one is: a b result -- -- ------ T T ... | |
| better code? | 1/20/2009 |
| Q: I'm new at programming but my teachers say that we need to practice to write better codes. How could ... A: loop unrolling (as in the example above), is a technique that attempts optimize a program's ... | |
| C++ | 1/19/2009 |
| Q: Write is copy constructor?write its types?Also explain it with the help of example? A: this is already answered at many places. for example, see: ... | |
| help me plz | 1/2/2009 |
| Q: can you please help me with this code below,i want this to put the returning value of the token ... A: main *must* return an int. the int returned by main() is a way for a program to return a value to ... | |
| Entity / relationship Diagram | 1/1/2009 |
| Q: Entity / relationship Diagram I know this is totally off the topic but was just wondering if you ... A: this is the mit opencourseware page: http://mit.nelc.edu.eg/OcwWeb/index.htm ... | |
| Entity / relationship Diagram | 1/1/2009 |
| Q: Entity / relationship Diagram I know this is totally off the topic but was just wondering if you ... A: relationships between entities which fall into three types: one to one: example => diploma - ... | |
| Thread mutex question | 1/1/2009 |
| Q: I know this question is not related to your field but I figured you may be able to help me on this ... A: glad you could solve this yourself by realizing that you need to link with libpthread. ideally, you ... | |
| Thread mutex question | 12/30/2008 |
| Q: I know this question is not related to your field but I figured you may be able to help me on this ... A: ok. read these pthread tutorials first. https://computing.llnl.gov/tutorials/pthreads/ ... | |
| Thread mutex question | 12/29/2008 |
| Q: I know this question is not related to your field but I figured you may be able to help me on this ... A: the current c++ standard (c++98) has no library support for threads; you have to rely on threading ... | |
| problem with linklist | 12/25/2008 |
| Q: i have a problem in this code below.i want to write a linkedlist that "head" always points to the ... A: a[i]=b[j] ; copies the char at position j in string b to the char at position i in string a. ... | |
| problem with linklist | 12/25/2008 |
| Q: i have a problem in this code below.i want to write a linkedlist that "head" always points to the ... A: in C, a string is an array of characters (memory containing a sequence of characters) ending in a ... | |
| shared constant base class/derived class dilemma | 12/23/2008 |
| Q: My question is about how to do something that should be simple, but classes/inheritance doesn't seem ... A: > initializing the constant string in a method wouldn't work from the constructor or Initialize() ... | |
| shared constant base class/derived class dilemma | 12/22/2008 |
| Q: My question is about how to do something that should be simple, but classes/inheritance doesn't seem ... A: have a virtual function virtual const char* filetype_string() const = 0 ; in the base class. ... | |
| problem with linklist | 12/22/2008 |
| Q: i have a problem in this code below.i want to write a linkedlist that "head" always points to the ... A: you need to allocate a separate node for each element in the linked list. the link for every node ... | |
| c++ | 12/15/2008 |
| Q: What is core language and why is c++ called a core language? A: in computer programming, the 'core language' is the definition of a programming language (sometimes, ... | |
| still on my increment operator | 12/12/2008 |
| Q: I have the code this way but when i compile and run the programme, it's doing nothing. supoose i ... A: > when i enter a time say : 12:05 it's giving me zeroes the code as it is will work as expected if ... | |
| Static Function | 12/11/2008 |
| Q: I need some clarification about static functions. I have basic idea about static function but my ... A: no, IS 12.8/15 allows this kind of optimization at any place where it recognizes that the following ... | |
| still on my increment operator | 12/11/2008 |
| Q: I have the code this way but when i compile and run the programme, it's doing nothing. supoose i ... A: there is an error in the overloaded prefix increment operator: the time is incremented twice. Time ... | |
| Static Function | 12/10/2008 |
| Q: I need some clarification about static functions. I have basic idea about static function but my ... A: Temp Temp::make() { return Temp(); //While retuns copy constructor been involved or not } ... | |
| Even when I include cstdlib. | 12/9/2008 |
| Q: Okay I did have include <cstdlib> and it still won't run and gives the "expected constructor ... A: > Here's your way: #include <ctype.h> // ... int main() { // ... } ... | |
| compilation error | 12/8/2008 |
| Q: There is an error when compiling: I've run the program and it points to system("pause"); and the ... A: the system() function is declared in <cstdlib> or <stdlib.h> in C. you need to #include the header. ... | |
| here's the code | 12/8/2008 |
| Q: okay here it is. i just want it to get over with. #include <cstdlib> #include <iostream> #include ... A: ok. here are the errors in the code. 1. the gender string has to be accepted from the user. add ... | |
| same problem again. | 12/7/2008 |
| Q: i'm really sorry. But the problem is I want the user to input characters with only m and f as well ... A: modify if( ( gender != "male" ) && ( gender != "female" ) ) { std::cout << "gender is ... | |
| Still a problem. | 12/7/2008 |
| Q: Hey. I've attempted your code. But there's still an error. I want to try all the possibilites like ... A: ok. since you want to accept complete strings (and not just a single character), modify your loop to ... | |
| any idea pls | 12/7/2008 |
| Q: i was studying the post increment and preincrement operator overloading in the c++ language. I ... A: > so that if i enter 10:00 as time, and i want it to print time++(post incremnt), that gives 10 ... | |
| Hey again. | 12/7/2008 |
| Q: I understand c++ upto using strings and functions. What about like asking the user to output male or ... A: > Isn't there a way to find out without using algorithms but just using if, while or do loops and ... | |
| any idea pls | 12/7/2008 |
| Q: i was studying the post increment and preincrement operator overloading in the c++ language. I ... A: before we come to the prefix and postfix increment operators, a few issues first: a constructor ... | |
| Hello PLEASE HELP. | 12/6/2008 |
| Q: I wanted to know if you could give me the code using strings for a name. What I mean is for example: ... A: the standard C library function isdigit(int) in the header <ctype.h> returns non-zero (true) if its ... | |
| Bank Account program in C | 12/5/2008 |
| Q: Apologies for not being clear in my previous e-mail. Below is an answer to a question you sent on ... A: ok. here is my way of writing this program. (there are several other ways to do it). *** warning: ... | |
| plz help | 12/4/2008 |
| Q: in this code below in the line that i have signed i don't know why it just print the value x=1 and ... A: void BUG( int x, int y ) ; function BUG takes the parameters by value. what bug gets are copies ... | |
| constructors | 12/3/2008 |
| Q: For the following prog u get the output as: 00000 01010 I don't understand why.. Just explain me ... A: this is a serious technical blunder. class Base { // ... }; class ... | |
| help me plz | 11/30/2008 |
| Q: i have a problem whit the code below,in the rows that i have signed the code i want the program to ... A: you are causing a buffer overflow for the array mark int mark[10][10],m,n; void main() { int ... | |
| plz help | 11/29/2008 |
| Q: can you give me a code wrote with rnd function for choosing a number between 1-10? i really get ... A: rand() returns an integer between 0 and RAND_MAX (inclusive). the constant RAND_MAX is ... | |
| plz help | 11/29/2008 |
| Q: can you give me a code wrote with rnd function for choosing a number between 1-10? i really get ... A: rand() returns an integer between 0 and RAND_MAX (inclusive). the constant RAND_MAX is ... | |
| Physica | 11/29/2008 |
| Q: Sir, Let me know how can I perform PC parallel port interfacing experiments in C++ in windows XP ... A: depends on the functions that you used in the code for windows 98. it may be possible to use the ... | |
| plz help | 11/27/2008 |
| Q: i have a problem about the code below it has an errrore for the push function ,it is"error C2601: ... A: a brace is wrongly placed. a closing } in main is missing and push has an extra } void push(struct ... | |
| Heritage Question | 11/26/2008 |
| Q: Below is an example I took from a book. Could you confirm that out of those 8 statements below, only ... A: i presume, you intended class Derived : public Base { .... }; and that Base and Derived are ... | |
| changing a for loop to a while loop | 11/25/2008 |
| Q: I was told that we should be able to make a while loop from a for loop, is that true? I have tried ... A: the for statement provides a compact way to iterate over a range of values. programmers often refer ... | |
| Complexity of Algorithms | 11/25/2008 |
| Q: Could you tell me how to find Complexity of Algorithms of the functions add and extract? also if you ... A: if you mean, a function that sorts an array using FilePrio: if the number of elements in the array ... | |
| Complexity of Algorithms | 11/25/2008 |
| Q: Could you tell me how to find Complexity of Algorithms of the functions add and extract? also if you ... A: function add has to execute a loop (the while loop for determining the position of the item in the ... | |
| copy constructor and assignment operator | 11/24/2008 |
| Q: could you tell me the difference between copy constructor and the assignment operator? I guess the ... A: > could you tell me the difference between copy constructor and the assignment operator? a copy ... | |
| copy constructor and assignment operator | 11/24/2008 |
| Q: ) I still have some more questions there which I commented on the code. Also if we were to write a ... A: // let's say we have 5, 10, 11, 12 and our t is 7 template <typename T> void FilePrio::add( const ... | |
| add/delete an element | 11/24/2008 |
| Q: You're my favorite expert on this site, I'm glad you're back from vacation :) I am trying to do ... A: emplate <typename T> void FilePrio::add( const T& t ) { // don't we need to add someting like if ... | |
| add/delete an element | 11/24/2008 |
| Q: You're my favorite expert on this site, I'm glad you're back from vacation :) I am trying to do ... A: i am guessing, the intent seems to be: template <typename T> class FilePrio is a singly linked list ... | |
| C++ Programming | 11/24/2008 |
| Q: two one-dimensional arrays A and B which are stored in assending order.to merge them into a single ... A: here is a simple non-recursive pseudocode implementation to merge two arrays a, b into array result: ... | |
| prime numbers | 11/21/2008 |
| Q: im given an assignment in which the user is to enter the number of prime numbers to be displayed and ... A: > i know how to check if a number is prime if you know that, the rest is trivial. a. you would be ... | |
| plz help | 11/20/2008 |
| Q: i want to learn graphic programming in c++ visual studio,can you help me which language i should ... A: the learning curve for graphics programming is fairly steep. you should be prepared to invest time ... | |
| testing all the functions | 11/16/2008 |
| Q: you were right, I wasn't compiling the right file! thanks :) Do you believe that my test program ... A: the basic idea of testing is to try and discover errors. in general, you would get the best return ... | |
| test program | 11/16/2008 |
| Q: it's me again :) could you also please help me to come up with a test for operator++ and ... A: > are there any side effects of having everything in .h file in my case( list.h) or in general? in ... | |
| test program | 11/16/2008 |
| Q: it's me again :) could you also please help me to come up with a test for operator++ and ... A: > is "firstElement = 0 ; " same as "firstElement = NULL ; "? yes, in C++ the definition of NULL is ... | |
| test program | 11/15/2008 |
| Q: it's me again :) could you also please help me to come up with a test for operator++ and ... A: > I understand the difference between the prefix and postfix but don't know how to test them! there ... | |
| typename template | 11/15/2008 |
| Q: the link you sent me was excellent. thank you so much :) Could you explain the difference between ... A: in template < typename T > void List<T>::Iterator::next() { position = position->next; } the ... | |
| testing the code | 11/15/2008 |
| Q: I did as you suggested and it is working now :) could you help me to come up with a test program ... A: a 'container' or to be more precise, a 'sequence container' is a class that holds a. a collection of ... | |
| testing the code | 11/15/2008 |
| Q: I did as you suggested and it is working now :) could you help me to come up with a test program ... A: everything in the C++ standard library resides in the namespace std. std::cout, std::string, ... | |
| testing the code | 11/15/2008 |
| Q: I did as you suggested and it is working now :) could you help me to come up with a test program ... A: the paste bin seems to be a good idea. the code is much more readable that it would be if you place ... | |
| C++ internal class | 11/14/2008 |
| Q: Below I pasted my list.h file for you to see. I am a newbie in C++. My template classes work fine ... A: templates are a pure compile-time mechanism. the compiler needs to see the template code for any ... | |
| plz help | 11/14/2008 |
| Q: i wrote the code below but i have a problem with the first function,for example we enter m=1 and ... A: the Ackermann function is a general recursive function. And you can implement it with three ... | |
| C++ internal class | 11/14/2008 |
| Q: Below I pasted my list.h file for you to see. I am a newbie in C++. My template classes work fine ... A: since the List<T> and List<T>::Iterator needs to use the name Element<T> and Element<T> needs to ... | |
| plz help | 11/14/2008 |
| Q: i wrote the code below but i have a problem with the first function,for example we enter m=1 and ... A: > can you check it out,and tell me if there is another way or easier way for correcting it? it is ... | |
| C++ internal class | 11/14/2008 |
| Q: Below I pasted my list.h file for you to see. I am a newbie in C++. My template classes work fine ... A: all you have to do is declare/define the class Iterator within the List<> class. the template ... | |
| plz help | 11/13/2008 |
| Q: i wrote the code below but i have a problem with the first function,for example we enter m=1 and ... A: You can treat the arguments of a function as variables, however direct manipulation of these ... | |
| C assending integers alghorithm | 11/13/2008 |
| Q: I have a mid-term coming up on C. One of the practice problems was to ask the user for 3 integers ... A: void swap( int* a, int* b ) { int temp = *a ; *a = *b ; *b = temp ; } int main() { ... | |
| C assending integers alghorithm | 11/12/2008 |
| Q: I have a mid-term coming up on C. One of the practice problems was to ask the user for 3 integers ... A: from the question, i presume that you have not yet come to arrays or functions. if that is the case, ... | |
| c program help | 11/11/2008 |
| Q: Writing a C program (call it RandPass.c) which can generate such passwords from 6 to 12 characters ... A: 1. write a function to generate a random printable character a. generate a random int in ... | |
| text file processing | 11/11/2008 |
| Q: Could you please take a look at my code? I cannot figure out why my code is displaying incorrect ... A: > I'm pretty sure the error is in my while loop. yes, your while loop has a subtle error in handling ... | |
| while loop Question ?? | 11/4/2008 |
| Q: Write a program that estimates the value of the mathematical constant e by using the formula: e = ... A: indent your code. makes it much easier to read and modify. unless you are using an obsolete ... | |
| c++ | 11/3/2008 |
| Q: Plz give me Project proposal for any game. A: if you are in the process of learning programming, the game that you program should a. be easy to ... | |
| overloading << and >> operators | 11/3/2008 |
| Q: Vijayan I know that in order to overload the << and >> operators I must do sth like this inside my ... A: the overloaded << operator is used by the compiler this way. note: C++ streams are not copyable; ... | |
| c++timetable | 10/28/2008 |
| Q: tis is the code i wrote for constructing the timetable could u pls help mi!!!i do nt knw why my ... A: the approach is right. but the basic problem with your code is: a. the use of uninitialized ... | |
| lexicographical_compare | 9/30/2008 |
| Q: I would like to know what is Leaxicographical_compare? I want to implement in linked list for ... A: The name of the lexicographic order stems from the order given to words in a dictionary: a sequence ... | |
| errors | 9/28/2008 |
| Q: what is difference between compile time error and run time errors??????????? A: A compile-time error is an error that the compiler gives when compiling your code. For example, the ... | |
| I need help with a C program please. | 9/25/2008 |
| Q: I'm a complete newbie to C programming and I need help writing a program. The program should do the ... A: You are almost there. Here is an outline of what you should do: #include <stdio.h> int main(void) ... | |
| how to make a project of library | 9/24/2008 |
| Q: sir i want to make a program of library where i want following points to be included: 1.store the ... A: implement the classes: date - keep a calendar date eg. 12 june 2009 title - the book title eg. ... | |
| .dlls in c++ | 9/18/2008 |
| Q: what are dll files? are they different in windows and turbo environment? how are they created and ... A: > what are dll files? a library is a collection of subroutines used to develop software. Libraries ... | |
| What is signal? | 9/18/2008 |
| Q: Hey thanks for ur reply to my earlier question. there are two functions available ,signal() and ... A: A signal is a limited form of inter-process communication used in Unix, Unix-like, and other ... | |
| STL::iterator | 9/17/2008 |
| Q: I have read source as to how to make own iterator for linked list. I have some problem while ... A: the error message is self-explanatory: 'A reference return value must be an lvalue' 0 is a literal ... | |
| file handling | 9/3/2008 |
| Q: I want to make a programming for reading existed file then multiplying each data and write each of ... A: the simplest way to do this would be to: a. read one line from the file into a string b. from the ... | |
| file handling | 9/2/2008 |
| Q: I want to make a programming for reading existed file then multiplying each data and write each of ... A: that is pretty simple: // open input, output files ifstream fin( in_file ) ; ofstream fout( ... | |
| c++ file handling | 9/1/2008 |
| Q: I want to make a programming for reading existed file then multiplying each data and write each of ... A: to set the format to fixed-point and precision to (say) 6 decimal digits after the decimal point: ... | |
| difference of <> and " " | 8/31/2008 |
| Q: sir, when im includeing a header file for eg #include<stdio.h> and also as #include"stdio.h" both ... A: for a #include <header_name> new-line searches a sequence of implementation-defined places for a ... | |
| c++ file handling | 8/31/2008 |
| Q: I want to make a programming for reading existed file then multiplying each data and write each of ... A: if you are familiar with the STL part of C++, #include <iostream> #include <fstream> #include ... | |
| doubt regaring wParam | 8/28/2008 |
| Q: My question iis, is there any specific value for the middle click(that is the scroling button in b/w ... A: if the middle mouse button goes down on the client area of a window, a WM_MBUTTONDOWN message is ... | |
| spech technology in c++ | 8/25/2008 |
| Q: sir, i am currently interested in doing a project on speech technology through c++ implementation ... A: what aspect of speech technology are you doing a project on? is it speech recognition, speech ... | |
| Creating class objects by reading text file | 8/22/2008 |
| Q: I want to create a class object by reading the text file. For example, if my text file has sentence ... A: > where could call of the void save(..) and base* create_from_stream(..) lie? anywhere, really. if ... | |
| Creating class objects by reading text file | 8/21/2008 |
| Q: I want to create a class object by reading the text file. For example, if my text file has sentence ... A: in a simple scenario, you could do something like this: #include <iostream> #include <fstream> ... | |
| different variables stored where | 8/21/2008 |
| Q: where are these variables stored in memory and in which part RAM/ROM? 1)static 2)global 3)const ... A: where a variable is stored and the life time of the variable is determined my the storage duration ... | |
| Read file into 2D array | 8/19/2008 |
| Q: I do not know what is wrong with the following code. I am trying to read data into a 2D array. The ... A: ok, let's start from the top in your code: > #include <iostream.h> > #include <fstream.h> I suppose ... | |
| macros in c++ | 8/18/2008 |
| Q: Vijayan what is the purpose of macros in c++? and how can i use a macro from another file/program? ... A: > what is the purpose of macros in c++? macros are a type-unsafe feature of the C preprocessor and ... | |
| book | 8/18/2008 |
| Q: Please tell me the best book for ASP.NET and c#. Thanks, RAVI A: i am not an expert on C# or ASP.NET. i have some familiarity with C# and you might find C# ... | |
| regarding c and c++ standard library | 8/16/2008 |
| Q: I am doing my MSc project to find out code complexity for some companies in both C an C++. And also ... A: the gnu compilers and libraries for both C and C++ are perhaps the most widely used by programmers. ... | |
| cstrings and strings in c++ | 8/15/2008 |
| Q: Vijayan i want to convert from cstring to strings and vice versa how can i do this? thanks A: c strings are simply arrays of char terminated by a null char. eg. char cstr[] = "hello" ; cstr is ... | |
| Object stream | 8/14/2008 |
| Q: . We r implementing one network protcol in c++ , we are using java code as reference.. In java we ... A: to perform network i/o, you could use the socket++ library. it has the same interface as that of the ... | |
| bank account program in C | 8/13/2008 |
| Q: Bank Account Problem 1. Create a bank account for a maximum of 10 persons. 2. Each account has ... A: 1. define a struct bank_account to hold the information about an account in one place. 2. create an ... | |
vijayan
Top Expert on this page
Expertise
my primary areas of interest are generic and template metaprogramming, STL, algorithms, design patterns and c++09. i would not answer questions about gui and web programming.
Experience
over 15 years
Education/Credentials
post graduate engineer
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