




C Preprocessor Directives
The C preprocessor is a micro processor that is used by compiler to transform your code before compilation. It is called micro preprocessor because it allows us to add macros.
Note: Proprocessor direcives are executed before compilation.

All preprocessor directives starts with hash # symbol.
Let's see a list of preprocessor directives.

#include
#define
#undef
#ifdef
#ifndef
#if
#else
#elif
#endif
#error
#pragma





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