摘要：转载来自kb神的推荐：http://cplusplus.com/reference/clibrary/cmath/很多基础的东西都没有记住啊注意数据类型的定义，貌似用double比较保险的说。。。headercmath (math.h)C numerics librarycmathdeclares a set of functions to compute common mathematical operations and transformations:Trigonometric functions:cosCompute cosine(function) ... 阅读全文