C in 100 Seconds: Preprocessor Directives — define, ifdef, ifndef | Episode 40

The C preprocessor runs before compilation. Learn define for constants and macros, ifdef for conditional compilation, ifndef for include guards, and how to pass defines from the command line. Student code: https://github.com/GoCelesteAI/c-in-100-seconds/tree/main/episode40 #c #programming #100seconds #learnc #preprocessor #define #ifdef #ifndef #tutorial