Files

#include<iostream.h>

#include<conio.h>

#include<fstream.h>

#include<iomanip.h>

void main()

{

fstream ob;

ob.open("stud1.dat",ios::out|ios::binary);

int rollno,mark,entry;

clrscr();

cout<<"\n\n\n\n\t\t\tEnter the serial no[0 to exit]:";

cin>>entry;

 while(entry!=0)

 {

 cout<<endl<<"\n\n\t\tEnter the stud no: ";

 cin>>rollno;

 cout<<"\n\n\t\tEnter the mark: ";

 cin>>mark;

 cout<<endl;

 ob<<setw(0)<<rollno<<setw(10) <<mark<<endl;

 cout<<"\n\n\n\t\t\tEnter serial no[0 to exit]";

 cin>>entry;

 }

ob.close();

getch();

}