Question

Write a program to write records of n number of students in a binary file​

Answer 1

Answer:

#include<stdio.h>

#include<conio.h>

#include<stdlib.h>  

struct student

{

int rollno;

char *name;

int m1,m2,m3;

}s1;

void main()

{

FILE *fp;

clrscr();

fp=fopen(“Record.dat”,”wb”); //opening binary file in writing mode

if(fp==NULL)

{

printf(“File could not open”);

exit(0);

}

printf(“Enter student detailsn”);

printf(“Roll No:”);

scanf(“%d”,&s1.rollno);

printf(“Name:”);

scanf(“%s”,s1.name);

printf(“Marks in three subjects:”);

scanf(“%d%d%d”,&s1.m1,&s1.m2,&s1.m3);

fwrite(&s1,sizeof(s1),1,fp);     //writing to binary file

printf(“nRecord has been added successfully…!!”);

fclose(fp);

getch();

}