check if the machine is big-end or small-end

gistfile1.c

#include    <stdlib.h>
#include    <stdio.h>

void
print_in_byte(void *a, int size){
    char    *byte_ptr = (char *) a;
    while (size--) {
        printf("%.2x ", *byte_ptr++);
    }
    printf("\n");
    return (void) 0;
}

int
main(int argc, char *argv[]){
    int a = 0x0a0b0c0d;
    print_in_byte(&a, sizeof(a));
    return EXIT_SUCCESS;
}