实现一个简单的工资管理系统。系统的主要功能是计算职工当月工资并存档。公司内有5种不同类型的职工：技术人员、销售人员、文秘、技术经理和销售经理，他们的工资计算方式各不相同。-To achieve a simple payroll system. Main function is to calculate the wage workers and the month archive. The company has 5 different types of workers: technicians, sales personnel, secretarial, technical managers and sales managers, their wages calculated differently.