雇员管理　　掌握类的构造函数和析构函数的概念和使用方法 掌握对对象数组、对象的指针及其使用方法 进一步加深对类和对象的理解-Employees to manage a class constructor and destructor of the concepts and master the use of an array of objects, object and its use to further deepen the understanding of classes and objects