.. index:: 
	single: Program Structure;  Introduction

=================
Program Structure
=================
In this chapter we will learn about using many source code files in the same project.


.. index:: 
	pair: Program Structure;  Source Code File Sections

Source Code File Sections
=========================

Each source code file may contains the next sections (in the same order).

+--------------------------------+
| Source Code File Sections	 |
+================================+
| Load Files			 |
+--------------------------------+
| Statements and Global Variables|
+--------------------------------+
| Functions 			 |
+--------------------------------+
| Packages and Classes		 |
+--------------------------------+

The application maybe one or more of files.

.. index:: 
	pair: Program Structure;  Using Many Source Code Files

Using Many Source Code Files
============================

To include another source file in the project, just use the load command.


Syntax:

.. code-block:: ring

	Load  "filename.ring"

.. note:: The Load command is executed directly by the compiler in the parsing stage

.. tip:: if you don't know the file name until the runtime, or you need to use functions to get the file path, just use eval().

Example:

.. code-block:: ring

	# File : Start.ring

	Load "sub.ring"

	sayhello("Mahmoud")

.. code-block:: ring

	# File : sub.ring

	func sayhello cName
		see "Hello " + cName + nl