Number Guessing Game in Rust (From the Official Rust Lang Book)

main.rs

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


fn main() {
    loop {
        let secret_number = rand::thread_rng().gen_range(1..101);

        println!("Guess the number");

        println!("Please input your guess.");

        let mut guess = String::new();

        io::stdin()
            .read_line(&mut guess)
            .expect("Failed to read line");


        // let guess: u32 = guess.trim().parse().expect("Please type a number!");
        let guess: u32 = match guess.trim().parse() {
            Ok(num) => num,
            Err(_) => continue,
        };

        match guess.cmp(&secret_number) {
            Ordering::Less => println!("Too small!"),
            Ordering::Greater => println!("Too big!"),
            Ordering::Equal => {
                println!("You win!");
                break; // exit loop
            }
        }

        println!("The number was: {}", secret_number);
    }
}