编写一个小公司的工资管理系统。该公司主要有4类人员：经理、兼职技术人员、销售员和销售经理。要求存储并显示每类人员的编号（从100起编号）、姓名和月薪，同时给出在创建每一类对象时构造函数的执行顺序（月薪计算方法为：经理固定月薪8000元，兼职技术人员100元/小时，销售员为当月销售额的4％，销售经理保底工资5000元另加其所管部门销售额的5％），要求用虚函数实现。-Write a small company payroll system. The company has four main categories of staff: manager, part-time technicians, salespeople and sales managers. Requirements for storage and display of each type of number ( 100 starting number), name and salary, and gives staff when creating each type of object constructor execution order (monthly salary is calculated as: a fixed monthly salary of 8,000 yuan manager, part-time technical staff 100 yuan/hour, the salesman of the month for 4　of sales, sales manager, Paul bottom wages 5000 yuan plus 5　of their control department of sales), require virtual function implementation.