Write a program to open a new file and read roll-no, name, address and phone number of students until the user says “no”, after reading the data, write it to the file then display the content of the file.

#include<stdio.h>

#include<conio.h>

struct

 {

  int roll;

  char name[25];

  char add[30];

  long phone;

  }std;

void main()

{

  char ch='y';

  FILE *fp;

  fp=fopen("d:\\cprg\student.txt","w");

  clrscr();

  while(ch=='y' || ch=='Y')

  {

  printf("\n Enter roll number: ");

  scanf("%d",&std.roll);

  printf("\n Enter name: ");

  scanf("%s",std.name);

  printf("\n Enter address: ");

  scanf("%s",std.add);

  printf("\n Enter phone number: ");

  scanf("%ld",&std.phone);

 fprintf(fp,"%d\t%s\t%s\t%ld\n",std.roll,std.name,std.add,std.phone);

  printf("DO you want to continue (Y/N)? ");

  ch=getche();

  }

  fclose(fp);

  fp=fopen("d:\\cprg\student.txt","r");

  printf("\nRoll\tName\tAddress\tPhone\n");

 while(fscanf(fp,"%d%s%s%ld",&std.roll,std.name,std.add,&std.phone)!=EOF)

 printf("%d\t%s\t%s\t%ld\n",std.roll,std.name,std.add,std.phone);

  fclose(fp);

  getch();

  }