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istream不会主动判断eof的In Reply To:请教：为什么while (!cin.eof())不行，而while (cin >> a >> b)就可以了（附源码）？ Posted by:xbz at 2006-06-03 19:28:06 >
> int main()
> {
> int a, b, temp, max;
> //while (!cin.eof()) { //这样写提交是WA
> while (cin >> a >> b) ｛ //这样写提交就AC了，Why？
> cin >> a >> b;
> cout << a << " " << b << " ";
>
> if (a > b) {
> temp = a;
> a = b;
> b = temp;
> }
>
> max = 0;
> for (int i = a; i <= b; ++i) {
> int cur = get_cycle(i);
> if (cur > max)
> max = cur;
> }
> cout << max << endl;
> }
>
> return 0;
> }
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