C语言常见问题总结

1,C/C++中static函数需要在头文件中声明吗？

不需要,

What is the problem of declaring static functions in header files?
It is somewhat unusual. Typically, static functions are functions needed in only one file. They are declared static to make that explicit by limiting their visibility. Declaring them in a header therefore is somewhat antithetical. If the function is indeed used in multiple files with identical definitions it should be made external, with a single definition. If only one translation unit actually uses it, the declaration does not belong in a header.

2,结构体作为函数参数传递,结构体以及结构体指针赋值

函数调用(函数参数用&),结构体以及结构体指针赋值:

定义以及在定义中的使用(函数参数不用&):