fn is_prime(n: u32) -> bool {
    if n <= 1 {
        return false;
    }

    for i in 2..=(n as f32).sqrt() as u32 {
        if n % i == 0 {
            return false;
        }
    }
    true
}

fn main() {
    for i in 2..=100 {
        if is_prime(i)  {
            println!("{} is prime", i);
        }
    }
}
