string factors56(int n) {
	ostringstream stream;
	
	if ((n % 5 == 0) && (n % 6 == 0)) {
		stream << n << " is divisible by both 5 and 6";
		return stream.str();
	}
	else if ((n % 5 == 0 || n % 6 == 0) && !((n % 5 == 0) && (n % 6 == 0))) {
		stream << n << " is divisible by 5 or 6, but not both";
		return stream.str();
	}
	else {
		stream << n << " is not divisible by either 5 or 6";
		return stream.str();
	}
}