#include <stdio.h>

int main (int argc, char **argv) {
    int integers[4] = { 1, 2, 3, 4};
    int arrayLength = 4;

    FILE *f = fopen ("file.bin", "wb");
    fwrite (&arrayLength, sizeof (int), 1, f);
    fwrite (integers, sizeof (int), arrayLength, f);
    fclose (f);
    return 0;

}