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cin就if(!cin)成真的时候表示结束了，scanf就判断返回值

Posted by hawk at 2005-02-03 16:20:50 on Problem 2111
In Reply To:再问一个问题，C++怎么判断输入文件结束？(+) Posted by:ZhangQi at 2005-02-03 15:47:59 
前者只是表示输入流进入失败状态了
读完了就是失败状态的一种
> 我只知道用EOF，具体语句不会！
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