They only need to have values if you care GetInt about getting something back from them, get int, swap you care about its value; but swap, I don't want to hear it again.
它们只需要拥有值,如果你关心,它们的返回值,你关心它的返回值,但是,我不想再得到它的返回。
And if you're returning nothing, you don't just leave it blank.
如果不返回任何值,你就让它成为空白的。
You don't have to bring any paper.
不需要带任何值。
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