Rust超入門勉強会でつくったやつ #learnrust_jp

game.rs

// TODO かっこよくする

use std::io;
use std::rand;

const MAX: uint = 100;

fn main() {
    println!("数当てゲーム");
    println!("範囲: 0~{}", MAX);

    let my_num = (rand::random::<uint>() % MAX) as int;
    let mut count: int = 0;

    loop {
        print!("> ")
        let result = io::stdin().read_line();
        match result {
            Ok(value) => {
                let your_num_option = from_str::<int>(value.as_slice().trim());
                match your_num_option {
                    Some(your_num) => {
                        count += 1;

                        if my_num < your_num {
                            println!("もっと小さい数です");
                        } else if my_num > your_num {
                            println!("もっと大きい数です");
                        } else {
                            println!("大正解🍺");
                            println!("回答数: {}", count);
                            break;
                        }
                    }
                    None => {
                        println!("数を入力してください");
                    }
                }
            }
            Err(e) => {
                println!("error: {}", e);
                break;
            }
        }
    }
}