有没有遇到过数据计算得出的结果为xx.99999998情况？

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有没有遇到过数据计算得出的结果为xx.99999998情况？Have you ever encountered a situation where the result of data calculation is xx.99999998?

For example: a = 0.8; b = a; a = 0.8-0.04; C = B-A = - 0.03999999... Most of the time, simple addition, subtraction, multiplication and division will result in this result. You have to add a ToFixed to get the desired result of the decimal point, which is extremely unfriendly for small programs of data calculation results

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