What are preprocessor directives in c language?

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

Nisha
27 May
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3 Answers

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MR

M.Venkata
23 Jan

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