从C系出发感觉长相怪异程度只比Erlang柔和那么一点点。文章来源：https://www.toymoban.com/news/detail-807020.html
教材里的猜数字字符界面游戏：文章来源地址https://www.toymoban.com/news/detail-807020.html
use rand::Rng;
use std::cmp::Ordering;
use std::io;
fn main() {
println!("Guess the number!");
let secret_number = rand::thread_rng().gen_range(1..=100);
//println!("The secret number is: {}", secret_number);
loop {
println!("Please input your guess.");
let mut guess = String::new();
io::stdin()
.read_line(&mut guess)
.expect("Failed to read line");
println!("You guessed: {}", guess);
let guess: u64 = match guess.trim().parse() {
Ok(num) => num,
Err(_) => {
println!("Please type a number!");
continue;
}
};
match guess.cmp(&secret_number) {
Ordering::Less => println!("Too small!"),
Ordering::Greater => println!("Too big!"),
Ordering::Equal => {
println!("You win!");
break;
}
}
}
}
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