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C++/Questions Answered by Expert Zlatko
| Subject | Date Asked |
| How to move a block in c++ graphics. | 2/10/2012 |
| Q: Sir. I am working on my project in c++ graphics which is on making a game and I am trying to make ... A: I am not sure if you are having trouble with getting keyboard data, or with drawing. I cannot help ... | |
| problem with strcmp function | 1/26/2012 |
| Q: I was trying to compare two strings, both char [50] types, using strcmp function. But an error crept ... A: There are two issues. In the sendname method, char* Person::sendname() { ptr = clsname; ... | |
| writing a struct with bit fields into a file. | 1/9/2012 |
| Q: halo mr. zlatko. this question is simple but it's part of a much larger project. the issue is ... A: When writing to files, the smallest data type which can be use is the byte. You cannot write ... | |
| SilverLight for Windows Phone , String to integer | 12/30/2011 |
| Q: I am currently working on a project to create a windows phone application on Visual Studio using C++ ... A: You could do this with stringstream if your string has many things and you wish to pick them off ... | |
| dynamic bit-fields | 12/16/2011 |
| Q: I was wondering if there is such thing as a dynamic bit-field or any other way to implement it? To ... A: Well thanks for being patient, I have had a busy week. To answer your question, you would need ... | |
| 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: In Windows, filenames are not case sensitive, so the C# would compile a .CS file. In fact, the two ... | |
| 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: You could use any extension you like for your new language, but if you use a popular extension, you ... | |
| dynamic bit-fields | 12/12/2011 |
| Q: I was wondering if there is such thing as a dynamic bit-field or any other way to implement it? To ... A: Yes of course it is possible to implement it. It would be built upon the tools I described in this ... | |
| scope | 12/6/2011 |
| Q: How are you? Thanks for taking questions. In my *.h file I have this class class LargeFile { int x; ... A: To call a method on an object, you need to have created an instance of the object. For example, in ... | |
| 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: The mergeFiles function you have written is not part of the LargeFile class. To make it part of the ... | |
| How to compare two 2D array and display the rows that do not match | 12/3/2011 |
| Q: This program i am trying to do is to compare two 2D array and display the rows that do not match, ... A: Before, you were comparing a 2D array against itself. For that reason you wanted to avoid comparing ... | |
| Threads | 11/14/2011 |
| Q: How do I wake up a thread, so that thread 0 can wake up thread 1 because there are not enough 0's. ... A: Hey is for horses. You can think of this as a producer/consumer problem. The fact that the total ... | |
| C++ | 11/14/2011 |
| Q: Please i want to cheack for this code Sorted Doubly Linked List with Insertion and Deletion ... A: I hate to bring you bad news, but the code is having some trouble. When you are writing a program in ... | |
| Threads | 11/11/2011 |
| Q: How do I wake up a thread, so that thread 0 can wake up thread 1 because there are not enough 0's. A: Usually, a thread will be waiting on some resource and will wake up when the resource becomes ... | |
| Help turning psuedo code into c++ code | 11/10/2011 |
| Q: Alright I am trying to write a program that will play Dots and Boxes, the common paper and pencil ... A: I would not store the grid co-ordinates (letters/numbers) in the grid, nor would I store the '+' ... | |
| 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: It’s an interesting problem, and I think you made a good start, but you have to continue refining ... | |
| deitel c++ | 11/4/2011 |
| Q: im writing a program trying learn c++ and i keep getting the error message, no appropriate ... A: In your main program, you have the line Pet myPet; That line is trying to make a Pet but it is not ... | |
| How to display the rows that do not match in a matrix | 11/3/2011 |
| Q: The objective of this program is to get the rows that are not the same within a data matrix. To ... A: The major error I made was to have j go from i+1. It needs to go from 0. We want to compare the ... | |
| How to display the rows that do not match in a matrix | 11/1/2011 |
| Q: The objective of this program is to get the rows that are not the same within a data matrix. To ... A: Lets have a look at this function. bool ArrayCompare2(int* first, int* second, int numelements) { ... | |
| Application of C/C++ in game programming | 10/26/2011 |
| Q: I am a student of Aeronautical Engineering (3rd year) from Mumbai, India. I have recently started ... A: C and C++ are both used for game programming because of high performance. For graphics, both OpenGL ... | |
| c | 10/23/2011 |
| Q: sir pragmas in c language can be used to supress warnings of a programme.can you give a programme in ... A: Pragmas are a way to give more information to the compiler to make it behave a certain way. ... | |
| Sorting logic | 10/5/2011 |
| Q: I have file having numbers written in one column and the size of the file is 1GB.But in my machine ... A: In general, the way to do it is to read in your original file in small parts and sort each part. If ... | |
| 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: The problem is in the input code else { p=p->next; p=new node; } The program is moving off ... | |
| Frequency analysis | 9/28/2011 |
| Q: .. I've an cryptographic related assignment where I need to code frequency analysis program that ... A: I guess you would need to remember the last 2 character sequence which was recorded. If the current ... | |
| Frequency analysis | 9/27/2011 |
| Q: .. I've an cryptographic related assignment where I need to code frequency analysis program that ... A: I have a suggestion for you to take a different approach if you need only pairs of letters. Use an ... | |
| c++ | 9/22/2011 |
| Q: i want to ask i have to chose specialization in it can i learn c++ on line is it easy to do it at ... A: It is not more difficult to learn C++ at home but it is not always easy either. With the internet ... | |
| Use of a variable in different projects | 9/22/2011 |
| Q: I need to solve a certain problem. I have 2 different projects in Visual .net 2003. One will be the ... A: Make sure the namespace is in both the dll header file and the dll source file In the header: ... | |
| Use of a variable in different projects | 9/21/2011 |
| Q: I need to solve a certain problem. I have 2 different projects in Visual .net 2003. One will be the ... A: I think I can help you. In your dll header file you should declare the variable being exported, like ... | |
| c++ | 9/21/2011 |
| Q: sir last time you gave clarification for abstraction.thank you. now my question is again ... A: I would say that the student class is an abstraction of a real living student because it reduces the ... | |
| c++ | 9/18/2011 |
| Q: sir my doubt is about data abstraction.data abstractio means representing essential features with ... A: You are correct about the integer example of data abstraction. When we do not care about how the ... | |
| c++ | 9/14/2011 |
| Q: sir my question about objects. fruit is a class.mango is object.in c++ class do not have memory. but ... A: What you say about class and objects is correct. I could add another analogy. A class is like the ... | |
| C++ | 9/10/2011 |
| Q: #include<iostream.h> #include<conio.h> void main() { int i,arr[1]; clrscr(); cout<<"enter the ... A: There is no array bound checking in C or C++. You have declared an array of one integer and that is ... | |
| Algorithms | 9/7/2011 |
| Q: Can you analyze the time complexity of the following programs. 1. s=0 ; i=1; while (s<n) { ... A: The first one is quite interesting. If you write out the values of s and i after each iteration of ... | |
| parameterised constructor | 8/27/2011 |
| Q: Sir, Yesturday I was reading about parameterised constructors. I read "There are two types of ... A: Implicit construction can occur when a constructor needs only one parameter. It might take only one ... | |
| xml and c++ | 8/21/2011 |
| Q: Is it possible to work with XML file as database and exclude information from it with c++ in .net ... A: For XML access, I have used only the Apache Xerces library, but if you are using .NET, I think ... | |
| Arrays | 8/14/2011 |
| Q: Sorry Slatko what i am trying to do if to check if the numbers of a row in the matrix formed by ... A: Here is the code I think you want. It goes between the call to secondPrintHeading(), and the comment ... | |
| Arrays | 8/12/2011 |
| Q: Sorry Slatko what i am trying to do if to check if the numbers of a row in the matrix formed by ... A: I think I understand now. Of all the rows displayed in the second matrix, you want to analyze the ... | |
| How to get the correct rows from a second array | 8/10/2011 |
| Q: I have been trying to create a simple program on how to obtain certain rows from a matrix of ... A: I was a little confused by your question so I may not understand completely what your are trying to ... | |
| Creating a function | 8/1/2011 |
| Q: I thought that understanding and create functions that display the rows that are repeated in an ... A: You don't need the ArrayCompare3 and ArrayCompare4 functions to get the output you want. If you find ... | |
| Creating a funtion | 7/31/2011 |
| Q: one year ago you created this function: bool MyCompare(int* first, int* second, int numelements) ... A: I cannot take the credit for creating that MyCompare function. I helped you to debug it, but clearly ... | |
| how to delete a error command line -std=c++0x in the IDE Code Blocks | 7/19/2011 |
| Q: Davis with a bonus CD that includes the Code::Blocks development environment, a full-service GNU C++ ... A: I don't use code blocks so I don't know about this problem. I can make a few guesses. Perhaps ... | |
| stack is corrupted erroe | 7/17/2011 |
| Q: My program is Matrix transpose and i run it in .net with using MPI. but i get following run time ... A: The message "stack around a variable is corrupted" usually means that you have written to an array ... | |
| Cryptography Algorithm | 6/5/2011 |
| Q: The following is recursive pseudocode: Function expo2(a, n) if n = 1 then return a if n ... A: Sorry, I don't have an algorithm for turning a recursive solution to an iterative one. In general, ... | |
| Cryptography Algorithm | 6/4/2011 |
| Q: The following is recursive pseudocode: Function expo2(a, n) if n = 1 then return a if n ... A: Edit: In the second program, the line while (reached * 2 < n) should read while (reached * 2 <= n) ... | |
| C++ | 5/29/2011 |
| Q: can u please recommend me another program to use instead of code blocks ? thanks, A: Yes, I can recommend either the Visual C++ express edition available for free from Microsoft at ... | |
| C++ | 5/29/2011 |
| Q: string* addEntry(string *dynomicArray, int &size, string newEntry) first: why did i write * ... A: In the line: string *addEntry(string *dynamicArray, int &size, string newEntry) The * before ... | |
| Program design | 5/3/2011 |
| Q: Greetings, I'll try to get straight to the point, but first a little background information on my ... A: I think you should not hesitate to explore gui programming. I think it is not correct to regard it ... | |
| Program design | 5/3/2011 |
| Q: Greetings, I'll try to get straight to the point, but first a little background information on my ... A: To take your programming to the next level, I recommend reading about desing patterns. I recommend ... | |
| c++ | 4/29/2011 |
| Q: i have to Developed the algorithm in c + + which create a dictionary containing publicly 50 thousand ... A: Sir. You haven't really told me what you are having trouble with, and you haven't given me very much ... | |
| c++ | 4/28/2011 |
| Q: i have to Developed the algorithm in c + + which create a dictionary containing publicly 50 thousand ... A: You can create a record to hold one word and store the records in a binary tree. You say you have ... | |
| c++ | 4/26/2011 |
| Q: i have to Developed the algorithm in c + + which create a dictionary containing publicly 50 thousand ... A: You will have to give me a little more information. Does your "dictionary" conatain just words, or ... | |
| FIFO queue array implementation | 4/20/2011 |
| Q: I have an assignment to modify a code from my text. This is probably painfully simple, but I'm too ... A: That's a great question. You have a FIFO queue, meaning that items are always added onto the tail ... | |
| arrays of integers | 4/16/2011 |
| Q: In this problem , given an abstract class to support arrays of Integers. All i need to extends two ... A: You've made a good start, but you have not told me what part you are having trouble with or what you ... | |
| file handling | 3/30/2011 |
| Q: I just want to ask some help with regarding file handling in c++. I am using bloodshed dev and been ... A: I took a closer look at your program. Now I see that you are actually storing products and suppliers ... | |
| C++ code for Binomial Coefficient | 3/30/2011 |
| Q: #include <iostream> using namespace std; int binomial(int n, int k); //function prototype int ... A: There is no "then" in the C "if" statement. It's simply written as if (n<k) { return(0) ; } The ... | |
| file handling | 3/29/2011 |
| Q: I just want to ask some help with regarding file handling in c++. I am using bloodshed dev and been ... A: Your program is certainly very slick. I have some ideas for you to consider. First, you should ... | |
| 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: Don't be shy to show me your code. In fact, I always give more effort to answering questions when I ... | |
| 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: I can give you an opinion, which may help you a little in your essay, but you will need other ... | |
| AVL tree | 3/19/2011 |
| Q: hye..i'm a beginner in c++.so my knowledge about avl tree coding is almost zero.so can u help me ... A: An AVL tree is a tree that keeps itself balanced. That means that for any node, the depth of the ... | |
| Destructor of Singleton class | 3/19/2011 |
| Q: Please go through the following code: ... A: I think the destroy should also be static because you should not need an actual instance of ... | |
| 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: You are correct that you need two integers to save the min and max. Declare them like this: int ... | |
| C++ cout stops working | 3/16/2011 |
| Q: I wrote a program that seems to compile and work fine, except that after a do-while loop completes, ... A: Notice in this loop do { token = strtok(NULL, delimiters_1); cout << token << ... | |
| Writing to a file | 3/12/2011 |
| Q: I am trying to convert a code which runs on windows to run on linux. Part of the code takes a string ... A: Sam, I don't think this is a Linux issue. If the file does not already exist, then the only way ... | |
| problem in seperating files | 3/9/2011 |
| Q: i have done this code and i dint know how to separate this code into two file infix.h and infix.cpp. ... A: The general idea is to place all the function declarations into a header file. Create an infix.h ... | |
| need advice | 3/8/2011 |
| Q: Sir, c or java-which one should be learned first for a complete biginner. sorry for my english & ... A: You do not need to know C++ to take a scja or scjp course. It is not that C++ is the basics and Java ... | |
| need advice | 3/7/2011 |
| Q: Sir, c or java-which one should be learned first for a complete biginner. sorry for my english & ... A: Either one will teach you the basics of programming, but I would choose Java over C because it is an ... | |
| c++ dictionary implementation | 2/25/2011 |
| Q: I have to code a dictionary in c++ which behaves like this: reads a text (from file) ,gives each ... A: I don't know what your algorithm is, but I would do it like this. Create a structure to hold your ... | |
| MFC | 2/23/2011 |
| Q: My simplest MFC application stopped working telling: C2661: 'new' : no overloaded function takes 1 ... A: I cannot reproduce the problem with my Visual Studio 6. I would need to see your entire project to ... | |
| Input\Output files | 2/22/2011 |
| Q: I want to read data from a file, store it into an array, and then display it on the screen. After ... A: When you read through the entire file, to the end, there is an error bit set to indicate the end of ... | |
| C++ program help | 2/14/2011 |
| Q: #include <iostream> #include <fstream> #include <iomanip> #include <cmath> using namespace std; ... A: Try changing the type of additionalTime from float to int. You are doing only integer arithmetic ... | |
| C++ errors help | 2/12/2011 |
| Q: Here is my code: #include <fstream> #include <iomanip> #include <cmath> using namespace std; int ... A: Joe, the structure of your current code is this: main() { while() { } else cout << ... | |
| C++ program help error | 2/12/2011 |
| Q: #include <iostream> #include <fstream> #include <iomanip> #include <cmath> using namespace std; ... A: Peter, in the line if{15 < Total_minutes <= 30){ change if{ to if( Also, syntax in the line if(15 ... | |
| C++ program help | 2/10/2011 |
| Q: #include <iostream> #include <fstream> #include <iomanip> #include <cmath> #include <time.h> ... A: Make sure to have #include <assert.h> at the top of your program. You might be interested in the ... | |
| C++ program help | 2/10/2011 |
| Q: #include <iostream> #include <fstream> #include <iomanip> #include <cmath> #include <time.h> ... A: Edit: -------- Hello Peter. I see you were quick to read my answer. Actually, there is a problem ... | |
| 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: I felt the best way to help you was to show you by video. Have a look here: http://goo.gl/CXo2l ... | |
| C++ if and else problem | 2/9/2011 |
| Q: #include <cmath> #include <iostream> #include <iomanip> #include <string> const double PI = ... A: There is a small misunderstanding in the "if" syntax. When you say if(shape=='C'||c) You are ... | |
| game | 2/1/2011 |
| Q: greetings! i would like to inquire if my design on my game is correct,i am implementing a user ... A: Here is what I think. When the game starts, I suppose it will ask for a user profile to load. By ... | |
| C/C++ | 2/1/2011 |
| Q: #include <stdio.h> #include <conio.h> int f1(int x) { return x*x; } int f2(int y) { ... A: You can check the order by putting in print statements into the functions. With my compiler, the ... | |
| Data Structures and Lists | 1/30/2011 |
| Q: I'm trying to grasp the concept, I have to create a shopping list asking a user to provide items, ... A: You've made a good start on the assignment. I can see that you understand the ideas of memory ... | |
| Random function in Turbo Borland | 1/29/2011 |
| Q: How can I write a random function in a Turbo C++ that will help me in making a gambling game? A: Although I do not use turbo C, I believe it uses the standard C library rand function. Here is a ... | |
| Fibonacci Sequence | 1/27/2011 |
| Q: I am trying to do a fibonacci sequence (to help me learn). It is to figure out the sum of even ... A: The modulus is separate from division. 2000000%2 is not division so it is a misconception to say ... | |
| Fibonacci Sequence | 1/26/2011 |
| Q: I am trying to do a fibonacci sequence (to help me learn). It is to figure out the sum of even ... A: The % operator is used for modulo division. It returns the remainder from a division operation. Your ... | |
| A computer mystery | 1/17/2011 |
| Q: Zlatho Hope you've been doing well. Ever since I've purchased a new wireless Microsoft mouse for ... A: I cannot give you a technical explanation about why the problem is occurring, but you seem to have ... | |
| unresolved external symbol error when using template class | 1/11/2011 |
| Q: I tried to create a template class. But while building i get the following linker error: 'unresolved ... A: I have been working on your code in visual C++ 6.0 and I do see the unresolved references too. There ... | |
| RE: Basketball Bet Program | 12/3/2010 |
| Q: This program involves calculating winnings/losses for basketball bets where the betting company ... A: It makes things much clearer. I now understand that the Winner bet is a type of betting scheme, and ... | |
| access specifier | 12/3/2010 |
| Q: When a sub-class is deriving from a base-class, what does the access specifier imply? eg. I have a ... A: In your example, Base::i is not accessible from main because it is not public in Base. The Base::j ... | |
| Basketball Bet Program | 12/1/2010 |
| Q: This program involves calculating winnings/losses for basketball bets where the betting company ... A: Virtual functions allow you to write code that uses some base class. At run time, you can pass a ... | |
| string str = "hello " "world" "!" | 12/1/2010 |
| Q: As you can see on the Subject, do you know why we can use double quote to concatenate the stirngs? ... A: I hope I spelled your name right! The concatenation is a language feature handled by the compiler. ... | |
| 2D Array Issue | 11/28/2010 |
| Q: I am not sure with the 2D array. There are a few errors during compilation. Compiler complains the ... A: You can initialize the table array as you are doing if you make it a static variable. I assume that ... | |
| Class Inheritance | 11/27/2010 |
| Q: I have 2 classes, Rectangle & Block. I am trying to make than communicate. However there are a few ... A: Below is the corrected program. I am not including a text explanation of what I did. I am trying ... | |
| c programming | 11/17/2010 |
| Q: Student grading system i've done program for students grading. it require user to input no of ... A: You can read my tutorial about console input in C here ... | |
| c programming | 11/16/2010 |
| Q: Student grading system i've done program for students grading. it require user to input no of ... A: Your code int value_input; valid_input=0 while (valid_input==0){ printf("\nMark Subject %d\t: ... | |
| RE: More help with polynomials | 11/15/2010 |
| Q: Remember the program I had to work on last time with polynomials? Now that we've learned about ... A: My answers to you are comments in the code so have a look there. There is more work for you to do. ... | |
| c programming | 11/15/2010 |
| Q: Student grading system i've done program for students grading. it require user to input no of ... A: Yes you have many compiler errors, and some logic errors. When you get a compiler error, you should ... | |
| More help with polynomials | 11/15/2010 |
| Q: Remember the program I had to work on last time with polynomials? Now that we've learned about ... A: If you want to have a special case for quadratics, you need to program it explicitly. You need a ... | |
| More help with polynomials | 11/14/2010 |
| Q: Remember the program I had to work on last time with polynomials? Now that we've learned about ... A: Yes the operator overloading is easy. You don't really need to think of any new algorithms, you ... | |
| Ploting points | 11/11/2010 |
| Q: I'm new to C++ and I have an assignment where I have to plot the point for f(mx+y)where m=1 thru 25 ... A: You can create a C function to calculate your expression like this: /* f() = mx + y */ float ... | |
| Algorithm: Adding Fractions Using 'For' Loop | 11/8/2010 |
| Q: I am trying to design (write a program in C++ or pseudo code) for a 'For' loop that will calculate a ... A: Edit: Hi Again Thank you for the kind review. Please understand that the back and forth you ... | |
| Algorithm: Adding Fractions Using 'For' Loop | 11/8/2010 |
| Q: I am trying to design (write a program in C++ or pseudo code) for a 'For' loop that will calculate a ... A: To write pseudo code means to write instructions in a natural language, like English so that the ... | |
| Algorithm: Adding Fractions Using 'For' Loop | 11/8/2010 |
| Q: I am trying to design (write a program in C++ or pseudo code) for a 'For' loop that will calculate a ... A: Nested loops are not the way to approach this problem. With a nested loop, an inner loop runs ... | |
| C++help | 11/7/2010 |
| Q: I am trying to build a 2 dimensional array of random numbers, which I accomplished. I am also ... A: I don't know how you got any output from your program, because the version you sent me doesn't ... | |
| need a little help with this program | 11/1/2010 |
| Q: Now here's a stock program (see code below), Now, I've made instantiated the buyprice as 69.34 and ... A: You've fallen into a common trap. Your Stock class has a float totalcost data member, and your ... | |
| Generating prime numbers | 10/31/2010 |
| Q: Hey. I have this assignment in which i've to generate prime numbers up to a certain limit. Since i'm ... A: The problem with the program is that it is checking for divisibility, not primeness. You see that ... | |
| Read word from text file. | 10/29/2010 |
| Q: Im creating program that will read one word from the text file. The word i want my program to read ... A: I could help you more if I knew what the profile.txt looked like and what you needed to do once the ... | |
| RE: need help with polynomials assignment | 10/28/2010 |
| Q: Check out my code now, I think the polynomial printing works now. I used all if statements to do ... A: Ok, I found 3 errors, and I made a minor change to fix them. The following are errors, because they ... | |
| RE: need help with polynomials assignment | 10/27/2010 |
| Q: Check out my code now, I think the polynomial printing works now. I used all if statements to do ... A: Mike ! I'm impressed. I really am. It's pretty good but I can make some suggestions. The program is ... | |
| need help with polynomials assignment | 10/25/2010 |
| Q: I'm having an assigned, it says to create a class for working with polynomials up to degree4. Five ... A: Edit: October 26 Mike, when printing out your polynomial, don't try to do it all in one cout ... | |
| need help with polynomials assignment | 10/23/2010 |
| Q: I'm having an assigned, it says to create a class for working with polynomials up to degree4. Five ... A: The word "other" is the name i gave to the polynomial being passed into the calcSum method. Here is ... | |
| need help with polynomials assignment | 10/22/2010 |
| Q: I'm having an assigned, it says to create a class for working with polynomials up to degree4. Five ... A: I think you have the right idea about how to do the assignment. You have a few issues with your ... | |
| Working with functions | 10/16/2010 |
| Q: I tried in the following program get the equal rows from a matrix of tens but without any success. ... A: The matrix of 10s doesn't really exist. The program just prints out the 10s data based on the ... | |
| sound | 10/15/2010 |
| Q: ,,can u pls tell hw to play a wave/mp3 file in c++. i am using turbo c++ ver 3.0. A: To play a wav file you can use the windows multimedia API function PlaySound Here is a sample ... | |
| clock | 10/14/2010 |
| Q: ,i made this clock program on my own,, i need to know how to exit from this program,,,nd goto to ... A: Henry, the clock function never returns because, after these three nested loops are done p: ... | |
| How to hold the right data into an array | 10/12/2010 |
| Q: I ran the last program you mailed me and the output is not what I want. Could you run the program I ... A: I assume you want the smallest and largest sum of only the rows that have your wishedNumber because ... | |
| How to hold the right data into an array | 10/8/2010 |
| Q: With this program I mailed you asking you why the arrays foundSums[rows] and foundRows[57](if I set ... A: October 10 Raul, as promised, here is some code that may do what you want. I have commented my ... | |
| How to hold the right data into an array | 10/7/2010 |
| Q: in the program I mailed you the size of foundSums[] and foundRows[] I set it to 11 just because in ... A: Yes, there are some problems caused by the malloc, but malloc is not the cause of the strange output ... | |
| C++ | 10/7/2010 |
| Q: write a program for merge sort using divide and conquer technique. A: I suggest you read about merge sort at http://en.wikipedia.org/wiki/Merge_sort Then, if you don't ... | |
| C++ | 10/5/2010 |
| Q: i have to write a program for class that will prompt the user for 10 integers one at a time then ... A: I think you must be running an older version of your program, because the current version doesn't ... | |
| C++ | 10/5/2010 |
| Q: i have to write a program for class that will prompt the user for 10 integers one at a time then ... A: That's a good start, but where is the end of the do/while loop ? You will need a counter to count ... | |
| How to hold the right data into an array | 10/4/2010 |
| Q: the following program output a matrix data with the sum of each number of a row, later the user ... A: If you know the array size at runtime only, then the best option is to allocate memory dynamically. ... | |
| Re: need a little help with function templates | 10/4/2010 |
| Q: So now, I have 1. printed out arrays as given in main. 2. sorted the arrays 3. saved the sorted ... A: It looks good. You don't need to use the sizeof, but I think its better because as you change ... | |
| Re: need a little help with function templates | 10/1/2010 |
| Q: So now, I have 1. printed out arrays as given in main. 2. sorted the arrays 3. saved the sorted ... A: If your objective is to read from the file and print, without storing in the array, then you don't ... | |
| Re: need a little help with function templates | 10/1/2010 |
| Q: So now, I have 1. printed out arrays as given in main. 2. sorted the arrays 3. saved the sorted ... A: Notice that every time the program calls getarray, the file is reopened, because getarray opens and ... | |
| C++ confusion | 9/30/2010 |
| Q: So I am new at C++ and here is my code. Everything works except the last part. I need to display ... A: I think one of the problems is with the comparison of midtermproject against a letter. The syntax ... | |
| need a little help with function templates | 9/29/2010 |
| Q: I'm working on an hw assignment, and I'm asked to write a function template that sorts the given ... A: If you want to open the file in the template function, and you want to save the previous contents, ... | |
| need a little help with function templates | 9/27/2010 |
| Q: I'm working on an hw assignment, and I'm asked to write a function template that sorts the given ... A: Your bubble sort works. The reasons you are getting wrong output is because you are trying to print ... | |
| need a little help with function templates | 9/27/2010 |
| Q: I'm working on an hw assignment, and I'm asked to write a function template that sorts the given ... A: You declared your template correctly, but the sort algorithm is not correct. You may think it sorts ... | |
| Algorithm | 9/24/2010 |
| Q: I am learning programming by myself (let me be honest, with your great help), I asked somebody ... A: Sorry for the delay. Sorry also that this explanation is a little long. It will help if you try to ... | |
| Algorithm | 9/22/2010 |
| Q: I'm sorry for my explanation but as I said before I was not sure about how to get my idea right. ... A: Here is my solution. Sometime you will have to tell me where do you get the ideas for these array ... | |
| Algorithm | 9/21/2010 |
| Q: my goal is how to create an algorithm for the following program. I am trying to create a program ... A: I think that a single array of integers is not enough information to solve the problem. Your "row" ... | |
| Calculate function Running time | 9/20/2010 |
| Q: I have to make efiiciency check for diffrent traversal like preorder,inorder and postorder. I have ... A: If you are using the Windows operating system, you can use the two calls to QueryPerformanceCounter ... | |
| C input recognition | 9/18/2010 |
| Q: I'd like to know a way in which we can accept a boolean function from the user, and perform ... A: Awesome question. The short answer is to use the shunting algorithm. See ... | |
| Just a simple one. | 9/13/2010 |
| Q: Well, I am new to experts.com and to C++ programming too. To get straight to the point, I wish to ... A: It is debatable whether C++ is more powerful than another programming language. It depends on what ... | |
| How to print results in a table | 9/9/2010 |
| Q: I checked when the user enters a size of 1 or 2 and it is working the way I want. The output I ... A: Ok, if you say your program is running correctly, I believe you. However I probably broke it because ... | |
| How to print results in a table | 9/9/2010 |
| Q: I am sorry for not explain better what the program does. First I want to say the program does what ... A: Raul, I think you sent your question to the wrong person, and that person sent it the the question ... | |
| How to print results in a table | 9/8/2010 |
| Q: How to print results in a table ... A: September 9 ------------ I suppose I can answer some of your questions. It seems that analysis is ... | |
| Opening a dialog box in the upper center of the page. | 9/8/2010 |
| Q: I am using Visual C++ 6. Since it is somewhat tall, I would like to have a dialog box open in the ... A: I assume you are using MFC. You can position your dialog window using CWnd::SetWindowPlacement in ... | |
| Read/Write to a file simultaneously from different users | 9/7/2010 |
| Q: Hey Zlatko, i am writting an application, where many users will try and have access to the same ... A: I think there is no problem with using the C++ iostream classes with shared files but the iostream ... | |
| c++ program help | 9/4/2010 |
| Q: I was going to start going into c ++ because I thought it was used to make programs like MSword. ... A: Sure, use google to search game programming in c++ to find web sites. Use google books to find ... | |
| An array inside a 2D array | 9/3/2010 |
| Q: I added some code to the program in topic " An array inside a 2D array ". After the user enter five ... A: If you don't need to keep the last row, then you can go back to an array of 5 rows as you had in ... | |
| An array inside a 2D array | 9/1/2010 |
| Q: I am learning by myself this amazing programming language C++ and I would like to know the ... A: Edit September 2, 2010 Raul, I've created a google site at ... | |
| An array inside a 2D array | 9/1/2010 |
| Q: What I want is the set of 5 numbers entered by the user be appended to the beginning of the array ... A: You have two options here. One option is to create your 2D array with as many rows as you will need ... | |
| c++ progrming | 8/29/2010 |
| Q: I am a college student taking a introduction class to C++ language.i have no idea about the ... A: I can help you with your question but I'm not sure how much experience you have with C++. My idea is ... | |
| c++ | 8/27/2010 |
| Q: will return types of different versions of the functions in case of function overriding? they will ... A: OVERLOADING ==================== Overloaded functions with the same parameter list must all have the ... | |
| Problem getting the desire output | 8/24/2010 |
| Q: Now my problem is how to get the desire output in a table of numbers. This is the program I have ... A: You need to print the correct number of spaces based on how long the text is in a particular cell. ... | |
| help with pow function | 8/24/2010 |
| Q: I'm writing a simple mortgage calculation program, here's what I have so far (obviously not ... A: A little bit of formatting shows that you are passing only one parameter to pow. You have ... | |
| convert C++ codes to Fortran codes | 8/23/2010 |
| Q: Is it possible to convert some C + + codes to FORTRAN codes? Is there any way? sincerely Amir ... A: You should use Microsoft Visual Studio (free express edition) in addition to, or instead of, your ... | |
| convert C++ codes to Fortran codes | 8/23/2010 |
| Q: Is it possible to convert some C + + codes to FORTRAN codes? Is there any way? sincerely Amir A: I do not know of any commercial program that will translate FORTRAN to C, but I've never searched ... | |
| intro to programming | 8/20/2010 |
| Q: I tried to write a code for this program but I have no luck to run it. I need you to help me. ... A: I would have liked to see your code, even if it didn't run. It would help me to help you learn. ... | |
| c++ programming | 8/20/2010 |
| Q: The process of finding the largest number(i.e the maximum of a group of numbers) is used frequently ... A: With my previous answer to you, I showed you how to do input from the keyboard into variables. Use ... | |
| How to display a message and numbers not present into a matrix | 8/13/2010 |
| Q: What I really want is a display like this: ROWS (0) (1) (2) ... A: I think I understand your question now. Step 1) The program asks for a number. Then it returns all ... | |
| How to display a message and numbers not present into a matrix | 8/9/2010 |
| Q: What I want from the following program is to get the rows with a desired number in column (0) and ... A: I had a little trouble understanding what you want, but I think you want to display if a number is ... | |
| procedure oriented language? | 8/9/2010 |
| Q: What is procedure oriented language? A: A procedure oriented language is one where an algorithm is broken down into a series of steps that ... | |
| general | 8/8/2010 |
| Q: i want to develop some appliction in in c++.can you give me some idea about any such projects .i am ... A: The fundamentals of programming can be learned with any computer architecture (8 bit, 16 bit, or ... | |
| c++ graphics | 8/7/2010 |
| Q: act i have made simple program in c++ to move a circle left of right by pressing 1 for left and 2 ... A: There is a function called kbhit which will return non-zero if there is a character in the keyboard ... | |
| c++ | 8/7/2010 |
| Q: i want to develop some appliction in in c++.can you give me some idea about any such projects .i am ... A: If you want to switch to visual studio, you can get a free visual studio c++ express edition from ... | |
| C++ file input problem | 7/21/2010 |
| Q: I am very new to C++, as such I am having difficulties with the settings. I tried for several hours ... A: I certainly understand how frustrating computers can be. I suspect that before you moved to the ... | |
| How can i correct an error in this program(to use arrow keys for selection in a menu).. | 7/19/2010 |
| Q: I have wrtiten a program to use arrow keys for selection in a menu.. I wrote it as a function so ... A: The problem with the program is in the way temp is being passed from main to smenu and from smenu to ... | |
| Using and doing calculations on dates in c++ | 7/16/2010 |
| Q: Sir, I am a high school student and I am creating a Library Managment Program. I need to use and ... A: You can get the local date with another constructor like this: #include <time.h> class Date { ... | |
| Using and doing calculations on dates in c++ | 7/14/2010 |
| Q: Sir, I am a high school student and I am creating a Library Managment Program. I need to use and ... A: I'll help you with your program. Since you are asking this question in the C++ category, I'll assume ... | |
| C++ Code to print the following pattern using While | 7/12/2010 |
| Q: Respected Sir, Kindly help me correct the given code to print the pattern using While Loop; * ** *** ... A: It is much easier to do this with nested while loops. You should try to take the earlier exercise, ... | |
| void summary wont work | 7/11/2010 |
| Q: I was hoping you could look at this and tell me why my void summary is not working I cant figure it ... A: It's nice to hear from you again. The problem with the program is that the lowest and highest ... | |
| visual studio 2008 vs Borland C++5.01! | 7/10/2010 |
| Q: I'm using Borland C++ 5.01 until now! Now I want to use Microsoft Visual Studio 2008 as compiler. ... A: The Borland C++ compiler is quite old and the C++ standard has changed since the Borland compiler ... | |
| C++ Code to print the following pattern | 7/8/2010 |
| Q: Respected Sir, Kindly help me complete the given incomplete code to print the pattern- A Ab ABc The ... A: That's good work. The code you sent me, with the cout change is this: void main() { int i,j; ... | |
| C++>>Read certain text from a text file | 7/8/2010 |
| Q: How can i read a certain range of word from a text file which contain 100+ of lines. eg, i would ... A: I don't know why you are getting that error. I cannot get the error. However, instead of using ... | |
| C++>>Read certain text from a text file | 7/7/2010 |
| Q: How can i read a certain range of word from a text file which contain 100+ of lines. eg, i would ... A: I can show you how to read the lines of the file. I do not know how to get from the input to the ... | |
| C++ Code to print the following pattern | 7/6/2010 |
| Q: Respected Sir, Kindly help me complete the given incomplete code to print the pattern- **** *** ** * ... A: Nice to hear from you again. In this program you have 2 nested loops. The outer loop controls the ... | |
| C++ Code to print the sum of the first 10 odd natural numbers | 6/29/2010 |
| Q: Respected Sir, Kindly help me Complete the following Incomplete Code, #include<iostream.h> ... A: I think you need to set sum to 0 before your loop starts and you need to fix the for loop statement. ... | |
| program | 6/24/2010 |
| Q: 4 4 3 3 3 3 2 2 2 2 2 2 1 1 1 1 1 ... A: If you are having trouble with this assignment, try to do something simpler. When you have success ... | |
| not sure how to do it | 6/15/2010 |
| Q: My teacher has given us a program to write involving void functions, I have the program 90% complete ... A: Wow! A beautiful program. I think what your teacher wants is for you to move all the problem ... | |
| strnicmp/OnKeyPress | 6/11/2010 |
| Q: I'm using Visual Studio 2010 and I have the following C++ code segment: #include<StdAfx.h> ... A: I get this question quite often. The simplest way to check for keyboard input without blocking is to ... | |
| a counter program | 6/11/2010 |
| Q: I want to have a program that counts the number of vectors like (X1 , X2 , … , Xn) subject to : Sum ... A: Nice to hear from you again. So, you want to count the number of vectors whose elements sum to r, ... | |
| strnicmp/OnKeyPress | 6/10/2010 |
| Q: I'm using Visual Studio 2010 and I have the following C++ code segment: #include<StdAfx.h> ... A: Your first parameter to strnicmp is the variable a which is a character. The function needs a ... | |
| How to compare 1D arrays inside of 2D arrays to check if they are equal. | 6/6/2010 |
| Q: I did what told me: bool comparison; for(int i=0; i< rows; i++) { for(int ... A: I think the program is working, but the display may not be what you want. Below is the original ... | |
| How to compare 1D arrays inside of 2D arrays to check if they are equal. | 6/5/2010 |
| Q: This is a program about to detect whether 2 rows are equal, not whether all of them are equal inside ... A: Your MyCompare function has a typing error. You have if(first[i]!=second[i]); <---- notice this ... | |
| lab 4- last one phewwww (argv) | 6/2/2010 |
| Q: I have one final lab due by midnight Friday. I did what I could so far with this one. This time just ... A: Nice to hear from you again. If I understand correctly, the objective of this last lab is to add ... | |
| size of an array | 6/1/2010 |
| Q: Is there any function in C++ that can calculates the summation of some values? I have some ... A: Yes, you are correct that the size of an array must be an integer constant, and yes, 'b' is a ... | |
| size of an array | 5/31/2010 |
| Q: Is there any function in C++ that can calculates the summation of some values? I have some ... A: As far as I know, there is no function to sum the contents of an array. It is a simple matter to ... | |
| 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: Shared memory is used for communication between processes. I have seen it used in simulations, where ... | |
| Software design (concept) | 5/24/2010 |
| Q: I am building this program that gathers stock market data(open, high, low, close, volume). My ... A: I don't know if I am helping you or not with this response. First I think you should not try to ... | |
| Software design (concept) | 5/21/2010 |
| Q: I am building this program that gathers stock market data(open, high, low, close, volume). My ... A: If you are writing your own analysis functions, you can certainly have them each accept a vector of ... | |
| Software design (concept) | 5/21/2010 |
| Q: I am building this program that gathers stock market data(open, high, low, close, volume). My ... A: I believe that your first approach is more correct. The 5 data elements all refer to a single stock ... | |
| how to set amount of time for user input | 5/19/2010 |
| Q: Here is my code I attempted, am trying to set a timer on user input. What I mean is how can I set ... A: Once you call a function like getline, you have no control over the program until getline returns. ... | |
| C++ help with a problem-structs this time | 5/18/2010 |
| Q: I have done what I can with the info/assignment and now I am stuck. I appreciate your time and ... A: I think you make a good start on your program, but some parts were incomplete and did not compile. ... | |
| 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: Very good questions. A GUI library is used to display windows on your screen. GCC is an excellent ... | |
| 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: I don't think there is one correct answer to your question. Any of the 3 programming languages will ... | |
| pointer? | 5/13/2010 |
| Q: i have a question to write a program that takes a phone number as input from the user and stores it ... A: I don't really understand your assignment. I don't understand Sample 2, and I don't understand how ... | |
| c++ | 5/11/2010 |
| Q: I changed program . Regards Tina #include <iostream> #include <iomanip> #include <sstream> ... A: I had a quick look at the program. I found only 1 serious problem. Try 1999 1 1, and 2000 1 1, you ... | |
| Re: | 5/7/2010 |
| Q: You didn't answer that in this program Where and How can I use reference variables? Regards. ... A: The general rule is that simple types (like int, float, char, ...) should be passed by value and not ... | |
| Re: | 5/7/2010 |
| Q: You didn't answer that in this program Where and How can I use reference variables? Regards. A: Sorry that I missed your question. You can use references in many places. When passing parameters to ... | |
| C++ help with a problem | 5/6/2010 |
| Q: I went online with the teacher today and went over the code remotely. I am still having issues with ... A: I think you will have problems if you try to write the entire program at once and then try to ... | |
| C++ help with a problem | 5/5/2010 |
| Q: I would appreciate any help you can provide me to complete this. Thank you so much! Assignment: ... A: You have some good ideas in your program. I see that you are trying to split the program into ... | |
| date | 5/4/2010 |
| Q: it works very well;) correctdate is a part of the main program.In main program I want to calculate ... A: In your days function, you have two instances of iss being declared. You have istringstream ... | |
| date | 5/4/2010 |
| Q: I've a program that it doesn't work.Could you help me. It's a part of a program.I want to check two ... A: Your program almost works. There are just a couple of problems with it. One problem is that you ... | |
| Adding arrays | 4/29/2010 |
| Q: Now I am in the same program trying to add another array (totalwinningNumber), I am not sure if I ... A: I think the problem is with for(int j = 0; j < noOfwinningNumber; ++j) ... | |
| Public variables accross source files within a program | 4/28/2010 |
| Q: Zlatko. I am building a program that analyzes certain aspects of a file and writes a graph showing ... A: There is no strict way to create a global variable in file A, and have it visible to only one other ... | |
| Reading a file | 4/25/2010 |
| Q: I am trying to learn c++ by myself , I made this program, it is about to read data and put it into ... A: It's great that you are teaching yourself a new skill. I'm glad to help out. The program is not ... | |
| Bank Accounts Program | 4/23/2010 |
| Q: I am so overwhelmed, I have no sense of direction. I'm not clear about virtual functions etc. I'm in ... A: I understand your frustration. Virtual functions are one of the more confusing parts of C++. Your ... | |
| Destruction of CDC class | 4/23/2010 |
| Q: Zlatko. I am working on a VC++6 Graph program that analyses the contents of a file. When the user ... A: I'm not really experienced in this part of MFC, but according to the msdn documentation, a release ... | |
| Nested Loops | 4/22/2010 |
| Q: I have to write a program. The Question is this: Jody is a teenager who is very fond of sweets. ... A: Good work on your program. The logic is correct but problems happen if you input an improper ... | |
| dynamic creation of template class objects | 4/15/2010 |
| Q: I need to read a delimited file and then extract fields and other information that i want to store ... A: Your project sounds very interesting and I am happy to do what I can to help out. Right now it seems ... | |
| call CPU Time | 4/14/2010 |
| Q: What is the command for calling CPU TIME in C++? ANSWER: Amir, the functions on windows are ... A: Amir, here is some sample code. #include "Windows.h" typedef unsigned __int64 PC_t; PC_t ... | |
| dynamic creation of template class objects | 4/14/2010 |
| Q: I need to read a delimited file and then extract fields and other information that i want to store ... A: Your English is fine. It is much better than my Spanish. Early in my career, I spent many months in ... | |
| dynamic creation of template class objects | 4/12/2010 |
| Q: I need to read a delimited file and then extract fields and other information that i want to store ... A: It would be helpful if you give me with a sample of the delimited input file. Also it would be good ... | |
| Problems adding shift key to left mouse button function | 4/11/2010 |
| Q: Zlatko, I'm creating a graph with Visual C++ 6 that both analyzes and changes certain parts of a ... A: Sorry for my error, the flags is a bit field, meaning you need to look at individual bits to get the ... | |
| Problems adding shift key to left mouse button function | 4/11/2010 |
| Q: Zlatko, I'm creating a graph with Visual C++ 6 that both analyzes and changes certain parts of a ... A: The MK_SHIFT in all caps is defined as a macro. That is why you need an alternate case. Are you sure ... | |
| Message Box without .NET | 4/10/2010 |
| Q: I need to check what version and is there one of .net framework installed on user's PC. So here is ... A: Branko, I usually use CreateProcess to start another program. Below is some sample code I was using ... | |
| Message Box without .NET | 4/10/2010 |
| Q: I need to check what version and is there one of .net framework installed on user's PC. So here is ... A: It might be simpler to add the dot net checking and installation code into the MFC dialog project. ... | |
| Message Box without .NET | 4/10/2010 |
| Q: I need to check what version and is there one of .net framework installed on user's PC. So here is ... A: You can create an MFC dialog box project to display a message box without dot net. Visual studio ... | |
| crash while writing or reading from memory | 4/10/2010 |
| Q: My program still some times crashes. This time I think I could find the source of problem but I ... A: When the function enters, the j0, k0, and h0 are uninitialized. It means they take on unpredictable ... | |
| Programming Issues | 4/9/2010 |
| Q: I'm fairly new to programming, really don't understand most of it. I've attempted a program that I'm ... A: I'm not sure if you got my last answer. Here is the correct code you should change. NumDays& ... | |
| Programming Issues | 4/9/2010 |
| Q: I'm fairly new to programming, really don't understand most of it. I've attempted a program that I'm ... A: Sorry for confusing you. I wanted to explain the reasons for everything. Generally for programming, ... | |
| A little more help ?? | 4/8/2010 |
| Q: okay ..here is my revised code ..It works great.But is there another way to write it aside from ... A: The atoi function converts a string of digit characters to an integer. So the string "123" becomes ... | |
| Programming Issues | 4/8/2010 |
| Q: I'm fairly new to programming, really don't understand most of it. I've attempted a program that I'm ... A: I like your question because it made me think. You did a pretty good job, but there are some things ... | |
| Another question | 4/4/2010 |
| Q: I have some problems with my program or my compiler.I use Borland C++ 5.02. Some times when i run my ... A: Calling functions causes changes in the program memory. A function call will use the stack (a region ... | |
| Help with a program.please | 4/4/2010 |
| Q: Here is my Program.Basically It does everything i want it to do , except check for data errors. I ... A: Sorry that I did not make it clear. For restricting row numbers, try this modified version of the ... | |
| problem in running process | 4/4/2010 |
| Q: I have some problems with my program or my compiler.I use Borland C++ 5.02. Some times when i run my ... A: in chseq_d, the variables j0 and k0 are initialized only when ... | |
| Help with a program.please | 4/4/2010 |
| Q: Here is my Program.Basically It does everything i want it to do , except check for data errors. I ... A: >Im not following what you mean by using column - 'A' instead of column-65 make the purpose more ... | |
| problem in running process | 4/3/2010 |
| Q: I have some problems with my program or my compiler.I use Borland C++ 5.02. Some times when i run my ... A: Amir, my build of the program did not crash so I don't know what the problem is. I tried Microsoft ... | |
| Help with a program.please | 4/3/2010 |
| Q: Here is my Program.Basically It does everything i want it to do , except check for data errors. I ... A: The infinite loop comes with cin >> someInteger when you accidentally enter a character. Input can ... | |
| problem in running process | 4/1/2010 |
| Q: I have some problems with my program or my compiler.I use Borland C++ 5.02. Some times when i run my ... A: Amir, it is not caused by the goto instruction. It is caused by an error in the program. The program ... | |
| Check Box problem | 3/30/2010 |
| Q: I am building a program that analyzes certain aspects of a file and writes a graph showing its ... A: I think you are not using the correct array syntax. It's like this: // Declare an array of CButton ... | |
| Integer class | 3/30/2010 |
| Q: I am trying to write an integer class that allows the user to enter a number 10 digits long. I am ... A: I assume that you are storing the number in your class as an integer, and that you want to return ... | |
| Check Box problem | 3/30/2010 |
| Q: I am building a program that analyzes certain aspects of a file and writes a graph showing its ... A: The GetDlgItem will return a CWnd* which you can cast to CButton* and store in an array or vector of ... | |
| Dynamic Array???? | 3/29/2010 |
| Q: I am stuck with a question in my programming book and unsure how to answer thisWrite a program that ... A: A dynamic array is an array that grows as elements are added to it or sometimes shrinks as elements ... | |
| C++ Hashing Table in Data Structure | 3/28/2010 |
| Q: .Zlatko,, I have some question to ask you regarding my project question. This is the question : ... A: I wrote a sample hash program in the hope that it will be useful to you. The hash table uses ... | |
| C++ Hashing Table in Data Structure | 3/28/2010 |
| Q: .Zlatko,, I have some question to ask you regarding my project question. This is the question : ... A: Before I go on to your new questions, I want to continue with what I started yesterday. I want to ... | |
| C++ program and I am stuck! | 3/27/2010 |
| Q: Here is my program. I cannot get it to work ..following that are the instructions..any advice would ... A: Well, I think I got the output you want. I had to change many of the setw calls, and left justify ... | |
| C++ Hashing Table in Data Structure | 3/27/2010 |
| Q: .Zlatko,, I have some question to ask you regarding my project question. This is the question : ... A: I would like some more time to think about some parts of your question but I can give you some ideas ... | |
| C++ program and I am stuck! | 3/26/2010 |
| Q: Here is my program. I cannot get it to work ..following that are the instructions..any advice would ... A: My advice to you is to first get the program to compile. Start with the first error. Fix it, then ... | |
| write a function that returns an array as result | 3/22/2010 |
| Q: How can I write a function that it can return an array as result? because of most of programs that I ... A: Sorry, there is no pretty answer to this question. When you allocate memory with new, you get back ... | |
| write a function that returns an array as result | 3/22/2010 |
| Q: How can I write a function that it can return an array as result? because of most of programs that I ... A: The syntax in main should be like this: int* result; result=myfunction(); There should be no '*' ... | |
| write a function that returns an array as result | 3/21/2010 |
| Q: How can I write a function that it can return an array as result? because of most of programs that I ... A: There are 2 ways of returning an array from a function. The most common way is to allocate memory ... | |
| Read a value at location in C++ | 3/10/2010 |
| Q: ! Sir, I am trying to read a particular location's value and want to store it in a variable and use ... A: If I understand correctly, your program has a window with a text field in it and the user types ... | |
| c++ help with loops | 3/7/2010 |
| Q: Write a C++ program asks the user for some integer number, N. The program will display the first N ... A: Juan, You have to read through all of my answer. You cannot just copy my code into your editor. My ... | |
| c++ help with loops | 3/7/2010 |
| Q: Write a C++ program asks the user for some integer number, N. The program will display the first N ... A: I would say that your outer loop is supposed to run until the desired number of primes has been ... | |
| Question regarding a graph in 'C'. | 3/6/2010 |
| Q: I am working on a VC++6 Graph program that analyses the contents of a file. One of the first things ... A: Using the filelength function is OK, but I would do it this way: int fd = _open ( “TrackName.trk”, ... | |
| Question regarding a graph in 'C'. | 3/6/2010 |
| Q: I am working on a VC++6 Graph program that analyses the contents of a file. One of the first things ... A: When declaring arrays in VC 6, you need a constant for the array size. The current C standard allows ... | |
| Need help | 3/5/2010 |
| Q: I need to implement an algorithm using c++ data structures. I have got two files file1 and file2. ... A: Your mentor may be correct that a map will be too slow for searching 600,000 entries. As you ... | |
| Error in my program | 3/3/2010 |
| Q: i got a problem in my assignment.. whenever i insert alphabet or symbol into the answer.. it become ... A: Your program works fine as long as the user inputs exactly what is expected. If the user input ... | |
| Need help | 3/3/2010 |
| Q: I need to implement an algorithm using c++ data structures. I have got two files file1 and file2. ... A: I can help you but I'm not sure about how much help your asking for or how much experience you have ... | |
| circular link list | 2/23/2010 |
| Q: I try with this code.. but still cannot make it.. help..me sir..Thanks void List::DisplayList() { ... A: That's pretty good, but your num value is one less than it should be because the first node is ... | |
| circular link list | 2/23/2010 |
| Q: I try with this code.. but still cannot make it.. help..me sir..Thanks void List::DisplayList() { ... A: If you set lastNode to null, you cannot then ask what lastNode->next is because you cannot go ... | |
| need help; circular link list | 2/22/2010 |
| Q: Can you help me with this code.. this is actually a single link list..I want to change it to be ... A: You have the right idea now. You did a good job, but there are some problems. When index == 0 and ... | |
| need help; circular link list | 2/22/2010 |
| Q: Can you help me with this code.. this is actually a single link list..I want to change it to be ... A: Think carefully about what a circular linked list is. The head points to the first element, and the ... | |
| add node to the last link list in C++; needs help | 2/21/2010 |
| Q: This program actually have 4 function. 1)AddLast = to add a new node at the last of the list ... A: Please make sure that your Node constructor sets the Node::next pointer to NULL. You did not supply ... | |
| Queue | 2/21/2010 |
| Q: I am writing a queue program which gives priority to female. The program will read infile.txt ... A: I recommend you use this loop for your input while (!infile.eof()) { string sex; ... | |
| Analyze a textfile/cpp file | 2/19/2010 |
| Q: I am trying to read in test.cpp in the main function for analyzing. But I am not sure how to make ... A: Nice to hear from you again. It looks like you are trying to open a file for input, read it in line ... | |
| Please Help | 2/9/2010 |
| Q: , I was wondering if you could help me with this... on my laptop there is a VGA port, let's assume ... A: As far as I know, this is not possible. The VGA port on your laptop is an output. It does not ... | |
| 2D Array | 2/8/2010 |
| Q: The outputs are incorrect. I am trying to perform +,-,*,/ for 2D arrays. Can advise me the correct ... A: The "this" pointer points to the object whose methods you are running. Each object has a this ... | |
| Pointers, Pointer to Pointers, and New[] | 2/8/2010 |
| Q: Hey Zlatko, I ran into a runtime error where I was (apparently) writing out of bounds for my array ... A: Here's a handy reference http://www.difranco.net/cop2220/op-prec.htm The problem is that the square ... | |
| copying | 2/7/2010 |
| Q: sir how can i copy my value of s1 into anothe string s3 using operator overloading function in the ... A: If you want to implement operator+= without strcpy, you have to copy the characters to the end of ... | |
| copying | 2/7/2010 |
| Q: sir how can i copy my value of s1 into anothe string s3 using operator overloading function in the ... A: That looks good to me. In my system, I had to have: #include <string> and I had to have main ... | |
| copying | 2/7/2010 |
| Q: sir how can i copy my value of s1 into anothe string s3 using operator overloading function in the ... A: You can use an operator= to do assignment from one string to another. const strng &strng::operator= ... | |
| 2D Array | 2/4/2010 |
| Q: The outputs are incorrect. I am trying to perform +,-,*,/ for 2D arrays. Can advise me the correct ... A: The reason the code is not giving the expected results is that the call to this->operator()(int,int) ... | |
| C++ count down | 2/4/2010 |
| Q: 1. I would like to know how to write a C++ program to "count from 10 to-5". 2. The other quest is, ... A: Your basic program skeleton is something like this #include <iostream> // for input and output ... | |
| C++ Implicit Conversion... | 2/2/2010 |
| Q: What is the problem with implicit conversion constructor?.. Why we need explicit conversion with the ... A: Implicit conversion occurs with single parameter constructors. It is easy to accidentally have the ... | |
| Arrays | 1/31/2010 |
| Q: I'm having problems with arrays, I know what they are for, but when it comes to implementing it, I'm ... A: I think you did a good job on your program. I'll make some suggestions. You should make your ... | |
| Pointer arithmetic | 1/30/2010 |
| Q: Using <cstring> header. If I want to compare two char arrays and display whether their elements are ... A: Steve, I really like the lookup table idea! But since the two arrays may be of different sizes, I ... | |
| Pointer arithmetic | 1/30/2010 |
| Q: Using <cstring> header. If I want to compare two char arrays and display whether their elements are ... A: First, I need to comment on your code. You need two character arrays to hold data, and one function ... | |
| Pointers | 1/27/2010 |
| Q: I am trying to output ASCII chars from a to z but my function crashed. Pls advise me further. Tks. ... A: Your program is crashing because you are trying to put a byte into a location pointed at by 'a', but ... | |
| Pointers | 1/24/2010 |
| Q: I am trying to display an array of digits using rand. My final result need to be: 1) Output all ... A: I see you are using a recursive algorithm for swapArray. That's very good. Your code had a few small ... | |
| corrections in translation C# to C++ | 1/23/2010 |
| Q: I have translation by Instant C++(C#edition)Tangible Software from C# to C++ as follows: for (I = ... A: I am not so good with formatting output to the screen. In C++, output formatting is done by setting ... | |
| Pointers | 1/22/2010 |
| Q: I am trying to display an array of digits using rand. My final result need to be: 1) Output all ... A: Steve, that is a good try. You have some confusion about when you need to allocate memory. You do ... | |
| exception 13 | 1/19/2010 |
| Q: while compiling i got an exception 13 error. can u help me fix it. i used turbo c++ on win xp. i'm a ... A: I have bad news for you. Your code has many problems. I have removed many of them but there are 24 ... | |
| Binary File | 1/17/2010 |
| Q: I need to perform a few tasks: 1. Read the infile.txt 2. Creation of binary file 3. Update binary ... A: Steven, I find your question very confusing, but I have tried my best to make sense out of it. I ... | |
| Binary File | 1/16/2010 |
| Q: I need to perform a few tasks: 1. Read the infile.txt 2. Creation of binary file 3. Update binary ... A: The corrections to you Task 1 are below.See my comments starting with //XXX The problem is that ... | |
| vector as a data member | 1/13/2010 |
| Q: This is a very short test program where I want to create objects which contain a vector as a data ... A: The problem is that you are using Public with a capital 'P'. It should be lower case. Also, in your ... | |
| fstream... struct... union | 1/11/2010 |
| Q: I am doing a program to read a sample infile.txt & ouput to outfile.txt The program is student ... A: I like how you did the FileToArray function. Although there is no error checking, you made good use ... | |
| C++ screen position | 1/11/2010 |
| Q: I'm using code blocks to write very basic programs for my son to get interested in C++... Q1...all ... A: What you are looking for is not a part of the C/C++ language or standard library. You need a Text ... | |
| C++ screen position | 1/11/2010 |
| Q: I'm using code blocks to write very basic programs for my son to get interested in C++... Q1...all ... A: I assume you are using the Code::Blocks IDE. I don't have any experience with that and I don't know ... | |
| fstream... struct... union | 1/10/2010 |
| Q: I am doing a program to read a sample infile.txt & ouput to outfile.txt The program is student ... A: Steven. I commend you for doing so much of your assignment before asking for help. I have corrected ... | |
| c++ | 1/9/2010 |
| Q: write a program in c++ to get the following structure: * * * * * * * * * * * * * * * ... A: To solve this puzzle, you should break it down into three pieces or functions. Many times solving a ... | |
| executing a '.exe' file in a cpp program | 1/7/2010 |
| Q: i want to run an exe file 'quiz.exe' from a cpp prgram 'game.cpp'. I referred many examples and ... A: To run a program from another program in the Windows operating system, you use the CreateProcess ... | |
| 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: When you write a program, you should compile often. Every time you finish a function, or a major ... | |
| 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: Your syntax for passing by reference is correct. You use an ampersand in the function declaration. ... | |
| c++ | 11/24/2009 |
| Q: i hv done the changes,nt sure is right or wrong.but wen i compile it display nthing.nt sure which ... A: Look closely at the code and think about what the program is doing here //-- Read file of words ... | |
| c++ | 11/23/2009 |
| Q: could u pls help mi.i realli hv no idea on hw to start.i hope u could guide mi on tis program.i will ... A: I think the common words are supposed to be ignored, just like numbers and punctuation. So, you need ... | |
| doubt in pointers | 11/22/2009 |
| Q: i am basically reading a txt file and making a link list database. i read all the elements in the ... A: I will need to see your program before I can help you. I cannot tell what can be wrong from your ... | |
| c++ | 11/22/2009 |
| Q: could u pls help mi.i realli hv no idea on hw to start.i hope u could guide mi on tis program.i will ... A: Your choice of a map for the STL container was excellent. You need to add a function to convert a ... | |
| c++ | 11/19/2009 |
| Q: ! what is the code in c++ for finding square root of a number without using the function sqrt() in ... A: Edit: When I was a student, I learned the Newton's method for finding the roots of an function. The ... | |
| c++ | 11/18/2009 |
| Q: could u pls help mi.i realli hv no idea on hw to start.i hope u could guide mi on tis program.i will ... A: Do you have a sister named Lisa ? I'll help you but I don't have too much time at the moment. What ... | |
| where can i f ind information for my compiler | 11/17/2009 |
| Q: please, i am currently using a dev c++ compiler but often times, i have read about statements like ... A: I believe that DevC++ is an IDE which uses the MinGW port of the GCC compiler. The gcc web page is ... | |
| Sorting and Searching Array Problem | 11/16/2009 |
| Q: My name is Ernest. I am trying to teach myself C++. I am currently working on a C++ problem that I ... A: I'm not sure I understand the problem, especially since you did not have processing of student names ... | |
| c++ | 11/15/2009 |
| Q: could u pls help mi.i realli realli need alot of help frm u.i still cn't seems to do the interest ... A: Lisa, you should only display the account if the account's customer ID is the same as the customer ... | |
| c++ | 11/15/2009 |
| Q: could u pls help mi.i realli realli need alot of help frm u.i still cn't seems to do the interest ... A: If I understand correctly, for each customer, you have to print out the accounts and investments ... | |
| Sorting and Searching Array Problem | 11/15/2009 |
| Q: My name is Ernest. I am trying to teach myself C++. I am currently working on a C++ problem that I ... A: I really appreciate you making an attempt at solving the problem. It shows you are serious, and have ... | |
| what could be wrong with my code? | 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: Yes, you are freeing memory when you don't want to. When you call int neg(dyna ob) { return ... | |
| c++ | 11/14/2009 |
| Q: could u pls help mi.i realli realli need alot of help frm u.i still cn't seems to do the interest ... A: Lisa, where you have //////////////////////////////////////////////////////// // Print out ... | |
| GCC vs MSVC++ compilation | 11/13/2009 |
| Q: I am about to lose my mind and hoping you can prevent it. Background: As part of a much-too-low ... A: I'm glad I could help. I'll address your questions. 1) File scope: The vector rundata was ... | |
| Graphics initialising error | 11/13/2009 |
| Q: Sir,I am using Turbo c++. While running the graphics programs I am getting BGI error as "graphics ... A: Perhaps you are not calling initgraph correctly. initgraph(&gd,&gm,"..//bgi"); The // indicates a ... | |
| GCC vs MSVC++ compilation | 11/13/2009 |
| Q: I am about to lose my mind and hoping you can prevent it. Background: As part of a much-too-low ... A: Hang on to your mind. When you're dealing with this quantity of data, you should stay away from the ... | |
| c++ switch, and functions | 11/12/2009 |
| Q: My syntax for the switch statement looks correct but I get case 2, 3, ... label not in switch ... A: Chris, if you consider a word to be characters delimited by spaces, then this function will do what ... | |
| c++ switch, and functions | 11/12/2009 |
| Q: My syntax for the switch statement looks correct but I get case 2, 3, ... label not in switch ... A: Chris, I corrected the syntax errors. My comments start with //--- I did not check any logic. I'm ... | |
| Career Opportunity | 11/11/2009 |
| Q: I've almost finished my first year at university and I want to know if I should try find an ... A: I think getting practical experience is an excellent idea. It gives you a chance to learn, and to ... | |
| c++ | 11/10/2009 |
| Q: i did nt gt frustrated.it is veri hard.i am trying veri hard to understand the program. i hv ... A: This assignment is certainly getting complicated. Here are my comments for your latest code. I have ... | |
| c++ | 11/9/2009 |
| Q: could you pls help mi,i realli realli need your help.i'm hving a veri hard time doing it.i'm trying ... A: Please make sure you read my suggestion at the end before making changes to your code. Here are ... | |
| c++ | 11/7/2009 |
| Q: could you pls help mi,i realli realli need your help.i'm hving a veri hard time doing it.i'm trying ... A: Your program does not compile. I have made corrections to the program to make it compile. The code ... | |
| computing the area of a triangle | 11/7/2009 |
| Q: i have an assignment due on computing the are of a triangle using 3 functions...my teacher really is ... A: The toughest part of this sort of assignment is handling the user's input. You have to handle ... | |
| c++ | 11/6/2009 |
| Q: could you pls help mi,i realli realli need your help.i'm hving a veri hard time doing it.i'm trying ... A: You've made a good start defining the types of classes you need but you are having trouble reading ... | |
| problem in c++ project | 11/3/2009 |
| Q: i had prepared following project in c++.suppose if i enter 10 accounts than delete any account ... A: I commend you for doing so much of your assignment. I've tested all of the functions and made slight ... | |
| which language to use for developing apps | 10/31/2009 |
| Q: I've a strong attitude towards programming, software engineering. I want to develop some cool apps ... A: That is a good question. I've never used Java professionally so I don't know how it's used in ... | |
| maze algorithm | 10/30/2009 |
| Q: I was taken an experiment that is the solution of maze problem, but I cannot solve it.I can find ... A: I'm happy to help but I cannot say why you are finding only one solution without seeing your code. I ... | |
| I am confused with my program | 10/28/2009 |
| Q: I am trying to write a program that will read students names and 3 grades from a file. then the 3 ... A: You have not told me what part of your program is giving you trouble. I will give you a bit of code ... | |
| 8 Queens | 10/26/2009 |
| Q: my problem is about 8 queens problem by Using an exhaustive technique,my problem is that what ... A: Bita, I cannot say what the problem is from this code fragment. Please post the entire program. If ... | |
| c++ | 10/26/2009 |
| Q: could u pls help mi,i realli need your help.i am trying to do a simple addition of using class ... A: If you have not done so, make sure you have declarations of your new functions in the myVector ... | |
| c++ input check | 10/25/2009 |
| Q: I am a beginner programmer and I've been trying to code a small game (something similar to PONG). In ... A: Alex, the problem is that if (kbhit) does not call the kbhit function, it simply returns the ... | |
| c++ | 10/25/2009 |
| Q: could u pls help mi,i realli need your help.i am trying to do a simple addition of using class ... A: That's very strange. I cannot reproduce the problem. No matter what I do, it allows me to enter both ... | |
| c++ | 10/24/2009 |
| Q: could u pls help mi,i realli need your help.i am trying to do a simple addition of using class ... A: That's pretty good. But you need a few changes to make it compile. In C++ you cannot have a variable ... | |
| to accept characters and cost of a node | 10/23/2009 |
| Q: ....am supposed to submit this on monday. the problem am facing is to accept a character instead of ... A: I am trying a little experiment. I've written a short tutorial on binary trees on google documents. ... | |
| linking loader...no errors but it doesn't produce the right output | 10/23/2009 |
| Q: ....i have some problem with the code below. it has no errors but does not produce the right ... A: I'm certain that you don't intend your first program to read pass1.c. Maybe it's supposed to read ... | |
| to accept characters and cost of a node | 10/23/2009 |
| Q: ....am supposed to submit this on monday. the problem am facing is to accept a character instead of ... A: I am having some difficulty understanding your question and I'm not sure what your program is to do. ... | |
| BMP in c++ | 10/22/2009 |
| Q: i am a university student and i want to Write a C/C++ program that extracts the width and height of ... A: You need to know the format of the bitmap file. I assume you are asking about the windows bitmap ... | |
| C++ Perfect Numbers | 10/22/2009 |
| Q: I just joined a programming club and we have to do problems to improve our knowledge from time to ... A: A computer club is fantastic! I suppose you like puzzles and don't want the answer given right away. ... | |
| linking loader...no errors but it doesn't produce the right output | 10/21/2009 |
| Q: ....i have some problem with the code below. it has no errors but does not produce the right ... A: Perhaps I misunderstood what the program is supposed to do when I said that the input file should be ... | |
| linking loader...no errors but it doesn't produce the right output | 10/21/2009 |
| Q: ....i have some problem with the code below. it has no errors but does not produce the right ... A: The program has a number of problems. At the end of my message is a list of warnings produced by the ... | |
| Simple program C++ one small problem | 10/20/2009 |
| Q: Im putting through this program and its running but it ends with this "error" The thread 'Win32 ... A: Andrew, I'm not getting that behavior. I see The program '[1208] Test.exe: Native' has exited with ... | |
| C++ classes | 10/19/2009 |
| Q: I am trying to ask user for input which is string type. Then I use pointer to point to that string ... A: Hey bro! In the line string* UI_ptr; you are declaring that UI_ptr is a pointer to a string. Later ... | |
| hi | 10/17/2009 |
| Q: what does they do?and how can i remember them easily? also how can i remember for,while,and do while ... A: The c++ string is an object that represents a sequence of characters. You can add characters to it ... | |
| process and thread priority | 10/13/2009 |
| Q: In my application, there are two threads. I want to set one of them the highest priority, and the ... A: Xiyuan, I am just responding to this follow up to remove it from my pending list. As I said in the ... | |
| process and thread priority | 10/13/2009 |
| Q: In my application, there are two threads. I want to set one of them the highest priority, and the ... A: According to the documentation the actual priority of a thread is a combination of the priority ... | |
| process and thread priority | 10/12/2009 |
| Q: In my application, there are two threads. I want to set one of them the highest priority, and the ... A: According to the documentation, the pseudo handle is interpreted as the current process for ... | |
| Simple program i just cant get | 10/11/2009 |
| Q: I have an online class and i just cant get the hang of how this is supposed to work, ive tried some ... A: Andrew, the problem is that C/C++ does not use the words "then" or "and" as part of the "if" ... | |
| process and thread priority | 10/11/2009 |
| Q: In my application, there are two threads. I want to set one of them the highest priority, and the ... A: In my experience, SetPriorityClass and SetThreadPriority are the only two functions you need to ... | |
| hi | 9/29/2009 |
| Q: hi can you explain to me in detail whats a pointer and array with examples and how they work? A: This is a big open question, so my answer may cause you to have more questions, but that's OK. Just ... | |
| help me!!!! | 9/28/2009 |
| Q: Write a program that computes the cost of a long-distance call. The cost of the call is determined ... A: I will try to help you, but you have not told me what you have tried or what you are having trouble ... | |
| help me!!!! | 9/28/2009 |
| Q: A public utilities company in in a city wants to track the status of its power service throughout ... A: Sir, I'll help you with the get_grid and display_grid, and you can then finish your assignment using ... | |
| C++ Doubt | 9/27/2009 |
| Q: How to increment the empid e001 to e002 by using the coding? Please mail me the coding to my ... A: I am not sure that I understand your question. If you have a variable called empid and it is an ... | |
Zlatko
Top Expert on this page
Expertise
I can answer questions about C / C++ programming, software design, algorithms, and interprocess communication. I have access to Microsoft Visual Studio and gcc as my development platforms.
Experience
I have been developing software professionally for UNIX and Microsoft Windows since 1991.
Education/Credentials
I have a Bachelor of Applied Science in Computer Engineering from the University of Waterloo located in Waterloo, Ontario, Canada.
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