Conditional Compilation

A note on conditional compilation

The preprocessor directives facilitate conditional compilation, which allows developers to include or exclude parts of code based on specific conditions. One can use #ifdef, #endif, #else, and #ifndef directives to achieve conditional compilation. For example, one can create a program that can be compiled conditionally to run in platform-specific ways on different computer systems.

Another example is an application consisting of many files, where we need to include printf statements in one specific file for the sole purpose of debugging it.