User Program Communication
Including Header Files in C++
A C++ program can include header files. They are used to provide either an interface, which gives function prototypes for definition, or to provide pre-defined definitions.
Syntax
//for standard system header files, like stdio.h. Will search standard system directories
#include <file>
//for header files built by the user, within the source code's directory
#include "file"
Notes
These header files are included and compiled by the preprocessor.
Example
#include <stdio.h>
#include "myHeader.h"