Question

How to read and write int to binary files in C

Answer 1

#include <stdio.h>
  
int main()
{
    int n = 8376;
    FILE *writep;
  
    writep = fopen("data.bin","wb"); 
    fwrite(&n, sizeof(int), 1, writep);
    fclose(writep);
  
    int tmp = 0;
    FILE *readp;
  
    readp = fopen("data.bin","rb");  
    fread(&tmp, sizeof(tmp), 1, readp); 
    fclose(readp);
      
    printf("%d\n", tmp);
     
    return 0;
}
  
  
  
/*
run:
  
8376
  
*/

 

70+ SQL courses for beginners and professionals