Conditional Compilation

# Conditional Compilation: #Ifdef, #Ifndef, #Else, #Endif Have you ever wished you could tailor your C code to different platforms, debugging scenarios, or feature configurations without manually commenting out large blocks of code? Conditional compilation, using preprocessor directives like `#ifdef`, `#ifndef`, `#else`, and `#endif`, provides precisely that power. It allows you to selectively include or exclude sections of code during the compilation process, making your code more flexible, ma