What are preprocessor directives in c language?

What do you mean by preprocessor directives in c language?What are its different types?

Nisha
27 मई
6930 दृश्य
3 उत्तर

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MR

M.Venkata
23 जनवरी

Preprocessor derivates are words which are known to the preprocessor.At compilation stage we have first stage as preprocessor stage.In this stage preprocessor replacement of macro,removal of comments will take place.Every preprocessor derivate start with#. eg:#define,#pragma,#ifdef,#ifndef,#elif,etc