WRITE A C++ PROGRAM THAT USES A SINGLE FILE FOR BOTH READING AND WRITING THE DATA

/* WRITE A C++ PROGRAM THAT USES A SINGLE FILE FOR BOTH READING
AND WRITING THE DATA*/
#include<iostream.h>
#include<conio.h>
#include<fstream.h>
void main()
{
char name[20];
int regno;
double perc;
clrscr();
ofstream writefile("nagaraj.dat");
cout<<"\nENTER YOLUR NAME:";
cin>>name;
writefile<<name<<endl;
cout<<"\nENTER YOUR REGNO:";
cin>>regno;
writefile<<regno<<endl;
cout<<"\nENTER YOUR PERCENTAGE:";
cin>>perc;
writefile<<perc<<endl;
writefile.close();
cout<<"\nFILE CREATED SUCCESSULLY........\n";
ifstream readfile("nagaraj.dat");
readfile>>name;
readfile>>regno;
readfile>>perc;
cout<<"\nCONTENTS OF THE FILE NAGARAJ.DAT IS READ AS FOLLOWS......\n";
cout<<"\nSTUDENT NAME:"<<name<<endl;
cout<<"\nSTUDENT REGISTER NUMBER:"<<regno<<endl;
cout<<"\nSTUDENT PERCENTAGE:"<<perc<<endl;
getch();
}