Expert: Prince M. Premnath - 7/29/2007

Question
i am a +2 student.need a c++ project.aprogramme including class and data files.pls take concern.thanks very much

Answer
Hi dear jisha !

Your question is not too specific , you are looking for a project but you didn't specify the objective of your project !

Before using files in your c++ programs you should have some basic knowledge about the files , different types of file opening modes etc ,
Here im presenting a simple C++ program that uses files and classes hope you will get some ideas over file
#include<iostream.h>
#include<fstream.h>
#include<stdlib.h>

class record
{
  private:
     char name[25];
     int age;
     friend class sample;
}rec;

class sample
{
  private:
     fstream iofile;

  public :
     sample();
     void readinput();
     void disp();
};

sample :: sample()
{   // open file in I/O mode
  iofile.open("default.txt" , ios::in | ios::out);
  if(!iofile)
  {
     cerr<<"Error opening file :";
     exit(0);
  }
}
void sample :: disp()
{
  // Place the get pointer at the beginning of file
  iofile.seekg(ios::beg);
  while(iofile.read((char*)&rec , sizeof(rec)))
  {
     cout<<"Empl Name : " <<rec.name;
     cout<<endl<<"Emp age :"<<rec.age<<endl;
  }
}


void sample :: readinput()
{
  char opt = 1;


  do
  {
     cout<<"Enter employee name :";
     cin>>rec.name;
     cout<<"Enter age :";
     cin>>rec.age;
     // write data's
     iofile.write((char*) &rec , sizeof(rec));
     cout<<" Wish to add another rec <y/n>?:";
     cin>>opt;
  }while( opt != 'n');
}

void main()
{
  sample a;
  a.readinput();
  a.disp();

}

Feel free to ask follow up if you have any detailed discussions over files !
Thanks and Regards
Prince M. Premnath