C Language Programming Library Reference Guide

Preprocessing Directives - #include

The #include directive allows external header files to be processed by the compiler.

Syntax:

#include <header-file

>

					

					or

					

					#include "

source-file"
When enclosing the file with < and >, then the implementation searches the known header directories for the file (which is implementation-defined) and processes it. When enclosed with double quotation marks, then the entire contents of the source-file is replaced at this point. The searching manner for the file is implementation-specific.

Examples:

#include <stdio.h>

					#include "my_header.h"

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