Guessing Game from Learning Rust: https://doc.rust-lang.org/book/first-edition/guessing-game.html

guessing_game.rs

extern crate rand;

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

/// Thanks: https://doc.rust-lang.org/book/first-edition/guessing-game.html
fn main() {
    println!("Guess the number!");

    let secret_number = rand::thread_rng().gen_range(1, 101);
    // println!("The secret number is: {}", secret_number);
    loop {
        if get_and_check(&secret_number) {
            break;
        }
    }
}

fn get_and_check(secret: &u32) -> bool {
    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(_) => {
            println!("{} is not a number. Try again: ", guess.trim());
            return false;
        }
    };

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

    match guess.cmp(secret) {
        Ordering::Less => println!("Too small"),
        Ordering::Greater => println!("Too big!"),
        Ordering::Equal => {
            println!("You win!");
            return true;
        }
    }
    false
}

File created during https://ddrscott.github.io/blog/2018/getting-rusty/