view src/t01guessing/src/main.rs @ 3:9bb0201e638b

guessing complete
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 11 Jan 2021 19:17:21 +0900
parents d2f0d33c1586
children 3d23e8517403
line wrap: on
line source

use std::io;
use rand::Rng;

use std::cmp::Ordering;

fn main() {
    println!("Guess the number!");

    let secret_number = rand::thread_rng().gen_range(1, 101);

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

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

        let mut guess = String::new();

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

        let guess: u32 = match guess.trim().parse() {
            Ok(num) => num,
            Err(_) => continue,
        };
        println!("You guessed: {}", guess);

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