// functions5.rs
// 让我能够编译！执行 `rustex hint functions5` 获取提示 :)

// I AM NOT DONE

/// 翻译: [mg-chao](https://github.com/mg-chao)
fn main() {
    let answer = square(3);
    println!("The answer is {}", answer);// 译："答案是 {}"
}

fn square(num: i32) -> i32 {
    num * num;
}