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还是不明白!

Posted by wqfcr at 2003-12-10 15:41:05 on Problem 1001
很对不起,还是不明白!
如果我这样写: cin>>..>>..;
> while(cin)
> {
> ....
> cin>>..>>..;
> }
电脑会一直叫我输入!
比如这题:
3.9807 21
23.785 13
...... ..
...... ..
然后不知怎样算是结束!望指教!谢谢!

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