#include <stdio.h>
#define countof(a) (sizeof(a) / sizeof((a)[0]))

int main(void)
{
    int m[] = { 16, 24, 32, 48, 64, 96, 128, 256 };
    
    for (size_t i = 0; i < countof(m) - 1; i++) {
        printf("%zu: %i %i %i\n", i, m[i], m[i + 1], m[i] - m[i + 1]);
    }
}