rust guess game

rust guess game

use std::io;
use std::rand;
use std::cmp::Ordering;

fn cmp(a: u32, b: u32) -> Ordering {
    if a < b { Ordering::Less }
    else if a > b { Ordering::Greater }
    else { Ordering::Equal }
}

fn main() {

    println!("Guess the number!");

    let secret_number = (rand::random::<u32>() % 100) + 1;

    loop {
        println!("Please input your guess.");
        let input = io::stdin().read_line().ok().expect("fail to read line");
        let input_num: Option<u32> = input.trim().parse();

        let num = match input_num {
            Some(num) => num,
            None => {
                println!("Please input a number!");
                continue;
            }
        };

        println!("You guessed: {}", num);

        match cmp(num, secret_number) {
            Ordering::Greater => println!("Greater"),
            Ordering::Less => println!("Less"),
            Ordering::Equal => {println!("you guess");break;},
        }


    }

   
}