use rand::Rng; // 随机数
use std::cmp::Ordering; //macth
use std::io; //io
fn main() {
    //生成随机数
    let s = rand::thread_rng().gen_range(1..101);

    loop {
        println!("请输入:");
        //io流读取输入文字
        let mut guesst = String::new();
        io::stdin().read_line(&mut guesst).expect("无法读取行");
        println!("你猜测的数是:{} ", guesst);
        //转换为int类型
        let guesst: u32 = match guesst.trim().parse() {
            Ok(num) => num,
            Err(_) => {
                println!("输入错误");
                continue;
            }
        };
        //循环判断输入的数字是否正确
        match guesst.cmp(&s) {
            Ordering::Less => println!("Too small"),
            Ordering::Equal => {
                println!("Yes win");
                break;
            }
            Ordering::Greater => println!("Too big"),
        }
    }
}