#include <stdio.h>
#include <stdbool.h>

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

    int prime_candidate = 17;
    bool is_prime = true; // Assume it is prime until proven otherwise.

    for (int divisor = 2; divisor < prime_candidate; divisor++) {
        if (prime_candidate % divisor == 0) { // divisor divides prime_candidate
            is_prime = false;
        }
    }

    if (is_prime) {
        printf("%d is prime!\n", prime_candidate);
    } else {
        printf("%d is not prime!\n", prime_candidate);
    }

    return 0;
}