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哪位大牛解释一下标程的调精方法（方法如下）

Posted by logics_space at 2009-02-09 10:57:46 on Problem 2646 and last updated at 2009-02-09 11:31:50
In Reply To:Re:精度问题怎么去解决？ Posted by:Ikki at 2005-10-13 10:23:36

scanf("%lf",&tem);
expense[i]=tem*100+0.1; 
为什么加上0.1就能够变得准确？

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