Prime Number

❓How to check a number is a prime number ?

🔁 Iterator Method

bool isPrime(int n) {
	if (n == 0 || n == 1) return false; // greater than 1
	// check i = 2 to n-1
	for (int i = 2; i < n; ++i) {
		if (n % i == 0) return false;
	}
	return true;
}