Write a program to store std-no, name and mark of ‘n’ students in a data file. Display the records in appropriate format reading from the file.

#include<stdio.h>

#include<conio.h>

struct

 {

  int roll;

  char name[25];

  float mark;

  }std;

void main()

{

  int n,i;

  FILE *fp;

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

  clrscr();

  printf("\n Enter how many records: ");

  scanf("%d",&n);

  printf("enter student number name and marks for %d students",n);

  for(i=0;i<n;i++)

  {

 scanf("%d%s%f",&std.roll,std.name,&std.mark);

 fprintf(fp,"%d\t%s\t%f\n",std.roll,std.name,std.mark);

  }

  fclose(fp);

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

  printf("\nRoll\tName\tMarks Obtained\n");

 while(fscanf(fp,"%d%s%f",&std.roll,std.name,&std.mark)!=EOF)

 printf("%d\t%s\t%f\n",std.roll,std.name,std.mark);

  fclose(fp);

  getch();

  }