C/C++预定义宏

MSVC文档：

https://learn.microsoft.com/en-us/cpp/preprocessor/predefined-macros?view=msvc-170

GCC文档：

https://gcc.gnu.org/onlinedocs/gcc/Function-Names.html

https://gcc.gnu.org/onlinedocs/cpp/Predefined-Macros.html

参考：

https://stackoverflow.com/questions/733056/is-there-a-way-to-get-function-name-inside-a-c-function

个人在Qt中常用：

qDebug() << __FUNCTION__;