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cin的状态In Reply To:过了,但是不知道为什么。为什么把cin>>a>>b;拿到外面来下面再写一次就行?如下 Posted by:faononl at 2004-03-02 22:24:39 读到文件末时cin的状态仍为真 再读一次就读不到数据,cin的状态变为假,应在此时跳出循环 就是说应该这样写才对: while (cin) { cin>>a>>b; if (!cin) break;////// ... } 和你现在的写法是等同的。 Followed by: Post your reply here: |
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