C program to read a variable from a file using the fread

Open the file in reading mode. If fopen function, open the file successfully, then using the fread function we can read the value of the variable.

#include <stdio.h>
int main()
{
    //Variable to store read value
    int data  = 0;
    //file pointer
    FILE *fp = NULL;
    //open the existing binary file
    fp = fopen("aticleworld.dat", "rb");
    if(fp == NULL)
    {
        printf("Error in opening the file\n");
        exit(1);
    }
    //read variable value from file
    fread(&data, sizeof(data), 1, fp);
    fclose(fp);
    return 0;
}