guessing_game/src/main.rs


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use rand::{self, Rng};
use std::{cmp::Ordering, io};

fn main() {
    println!("Guessing game!");

    let secret_number = rand::thread_rng().gen_range(1..=10);
    println!("The secret number is {}", secret_number);

    loop {
        println!("Please enter a guess!");
        let mut guess = String::new();

        io::stdin()
            .read_line(&mut guess)
            .expect("A guess should be entered");

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

        let guess: u32 = match guess.trim().parse::<u32>() {
            Ok(num) => num,
            Err(err) => {
                println!("Couldn't parse '{}' ({})", guess.trim(), err);
                continue;
            }
        };

        match secret_number.cmp(&guess) {
            Ordering::Less => {
                println!("You guessed wrong! ({} < {})", secret_number, guess);
            }
            Ordering::Equal => {
                println!("You guessed right! ({} = {})", secret_number, guess);
                break;
            }
            Ordering::Greater => {
                println!("You guessed wrong! ({} > {})", secret_number, guess);
            }
        }
        println!("Try again!")
    }
}