simple fizzbuzz in C

fizzbuzz.c

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

int main(int argc, char **argv)
{
    int maxval;

    if (argc < 2 || sscanf(argv[1], "%d", &maxval) != 1) {
        fprintf(stderr, "usage: %s <max-value>\n", argv[0]);
        exit(1);
    }

    for (int i = 1; i <= maxval; ++i) {
        if (i % 3 == 0) {
            if (i % 15 == 0) {
                printf("fizzbuzz\n");
            } else {
                printf("fizz\n");
            }
        } else if (i % 5 == 0) {
            printf("buzz\n");
        } else {
            printf("%d\n", i);
        }
    }

    return 0;
}