#!vyder

let println = import("std-fmt").println;

let is_prime = fn?(num) {
	if (num < 0) {
		return ~"cannot check negative numbers";
	};

	if (num == 0 or num == 1) {
		return false;
	};

	if (num == 2) {
		return true;
	};

	for (i in 2..num) {
		if (num % i == 0) {
			return false;
		};
	};

	-> true;
};

for (num in 0..100) {
	if (is_prime(num)) {
		println("{} is a prime number!", num);
	};
};