cal
代码说明:
计算式的计算,能用字符的形式完成大部分的计算,应该有不少人编了此程序,但是这个还是有新颖之处,完全是对字符处理产生的计算,可以使用全角计算符,对三角函数,科学计数等有很好的支持,算是我对字符串处理一个探索成果。(Formula calculation, can be used to complete most of the characters in the form of calculation, should be compiled of the many people in this process, but this is still a novelty, is Zifu handling to complete the calculation, you can use full-width calculation breaks, on trigonometric functions, scientific counting good support, I suppose I deal with an exploration of the string results.)
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