guessing.rs

extern crate rand;

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

fn main() {

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

    let mut guess = String::new();
    loop {
        println!("Give ussss a numbers? ");

        io::stdin().read_line(&mut guess)
            .ok()
            .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!("Got it!");
                break;
            }
        }

    }
}

            Err(_)  => {
                println!("Oops! cannot parse {}", guess);
                continue;
            },