src/main.rs
Cargo.toml


main.rs

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

fn main() {
    let secret_number = rand::thread_rng().gen_range(1..101);
    loop {
        print!("please input a int number 1~100 :");
        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,
        };

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


Cargo.toml

[package]
name = "guess_game"
version = "0.1.0"
edition = "2018"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
rand = "0.8.4"




[root@VM_0_16_centos guess_game]# cargo run
    Finished dev [unoptimized + debuginfo] target(s) in 0.01s
     Running `target/debug/guess_game`
50
please input a int number 1~100 :please input a int number 1~100 :Too small!
70
please input a int number 1~100 :Too big!
60
please input a int number 1~100 :Too big!
55
please input a int number 1~100 :Too big!
53
please input a int number 1~100 :Too big!
52
please input a int number 1~100 :Too big!
51
please input a int number 1~100 :You win!


完整代码
https://gitee.com/dyyx/hellocode/tree/master/web/tech/rust/guess_game