header files

Question

Why don't we use the extension <.h> for the header files in c++ OR is it compiler/machine dependent?

Answer 1

Add your files what u need.You can call these by
->include(), include_once(), virtual(), require() and require_once().
For Example:
<?php include("includes/header.html"); ?>
In C and C++,
A header file is a file with extension .h which contains C function declarations and macro definitions to be shared between several source files.For example:
#include "header.h"