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// functions5.rs
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// 让我能够编译！执行 `rustex hint functions5` 获取提示 :)
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// I AM NOT DONE
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/// 翻译: [mg-chao](https://github.com/mg-chao)
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fn main() {
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let answer = square(3);
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println!("The answer is {}", answer);// 译："答案是 {}"
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}
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fn square(num: i32) -> i32 {
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num * num;
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}
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