即将离开知乎
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http://stackoverflow.com/questions/19892691/why-does-c-preserves-both-goto-and-while-involving-tail-recursion
您即将离开知乎,请注意您的帐号和财产安全。
http://stackoverflow.com/questions/19892691/why-does-c-preserves-both-goto-and-while-involving-tail-recursion