cleverer!

#include <stdio.h>
int main (int argc, char *argv[]) {
    char fs[] = "%_$s ";
    char s[8];
    int i;
    for (i = 1; i < 101; i++) {
        sprintf(s, "%d", i);
        int c = (i%3) ? 0 : 1;
           c += (i%5) ? 0 : 2;
        fs[1] = "1234"[c];
        printf(fs, s, "Fizz", "Buzz", "Fizz-Buzz");
    }
    return 0;
}