project euler problem 7

main.rs

fn is_prime(val: u64) -> bool {
    let end = |current_val: u64| -> bool { current_val * current_val > val };

    let mut i = 2;
    loop {        
        if (val % i) == 0 {
            return false;
        }
        if end(i) {
            return true;
        }
        i += 1;
    }
}
fn main() {
    let mut nth = 0;
    let mut i = 0;
    let goal = 10001;
    loop {
        i += 1;
        if is_prime(i) {
            nth += 1;
            println!("{}, {}", nth, i);
            if nth == goal {
                println!("{}", i);
                break;
            }
        }
    }
}