Structure and File Handling 1

#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
#define no 20
struct
{
int r_no;
char name[30];
int m1;
}s[no];
void main()
{
int i;
char ch;
FILE *fp;
clrscr();
fp=fopen("C:Student.dat","r");
printf("\nResult of students:\n");
printf("\nS.No. Rollno Name\t\t\tResult\tPercent");
printf("\n----- ------ ----\t\t\t------\t-------");
fread(s,sizeof(s),no,fp);
for(i=0;i<no;i++)
 {
 if(s[i].m1&gt=40)
  ch='P';
 else
  ch='F';
 printf("\n%-4d  %-5d  %-25s\t%3c\t %.2f%",i+1,s[i].r_no,s[i].name,ch,s[i].m1);
 }
getch();
fclose(fp);
}