trpl-zh-cn/listings/ch02-guessing-game-tutorial/no-listing-02-without-expect/src/main.rs

use std::io;

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

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

    let mut guess = String::new();

    io::stdin().read_line(&mut guess);

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