The difference between C header file and C++ header file

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标准的C++头文件没有.h扩展名,将以前的C的头文件转化为C++的头文件后,
有时加上C的前缀表示来自于C,例如cmath就是由math.h变来的
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Origin blog.csdn.net/cfk17829572643/article/details/111698083