//C program for writing
//struct to file
#include <stdio.h>
#include<stdlib.h>

//a struct to be read and written
struct person{
    int id;
    char fname[20];
    char lname[20];
};

int main() 
{
    FILE*outfile;

    //open file for writing
    outfile=fopen("person.bin","wb");
    if(outfile==NULL) {
        fprintf(stderr,"\nError opened file\n");
        exit(1);
    }

    struct person input1={1,"shobhit","singh"};

    //write struct to file
    int flag=0;
    flag=fwrite(&input1,sizeof(struct person),1,
                outfile);
    if(flag){
        printf("Contents of the structure written successfully");
    }
    else
        printf("Error Writting to File!");

    //close file
    fclose(outfile);

    return 0;
}