// Author: John Doe  ID: 123-45-6789
// Title: Payroll Application 
// Reference: Problem 3.10.3 on page 103
// Files: 
//	1. file1	<description>
//	2. file2	<description>
//	....
// Each class should have an inline comment for each of the members.
// Each function should have the following comment:
// Purpose: ...
// Receives: 
// 	input_arg1	<description>
// 	input_arg2	<description>
// 	...
// Returns: 
//	output		<description>
//	output_arg1	<description>
//	output_arg2	<description>
// 	...
// Remarks: 
//	...