The C++ Programming Language - C++ Macros, defines, __LINE__, and std::source_location (C++ 20) | Modern Cpp Series Ep. 107

►Full C++ Series Playlist: https://www.youtube.com/playlist?list=PLvv0ScY6vfd8j-tlhYVPYgiIyXduu6m-L ►Find full courses on: https://courses.mshah.io/ ►Join as Member to Support the channel: https://www.youtube.com/channel/UCA64pZbN5Mz5NxC3SO4qpDg/join ►Lesson Description: In this lesson I show you how to use macros in C++. While some of you may have seen my video on the compilation process (https://www.youtube.com/watch?v=ksJ9bdSX5Yo), it's useful to review in this tiny lesson some of the different things you can do with macros. In fact, you can create lots of handy functions that expand and wrap around your functions. I'll also show you how to use 'define' from the command line so you don't have to litter your code or make source changes to change behavior. Finally, I'll show you some handy macros like __LINE__ and __FILE__, and how in modern C++ we can instead use std::source_location. ►YouTube Channel: https://www.youtube.com/c/MikeShah ►Please like and subscribe to help the channel! ►Join our free community: https://courses.mshah.io/communities/Q29tbXVuaXR5LTI3MzAz