以一个小型公司的人员信息系统为例，用基类的指针数组来处理不同的派生类对象，从而实现拉多态性调用。使用动态数组类模板Array来代替C++预定义的数组类型。-to a small company personnel information system. use the base class pointer array to handle different types of derived objects, thereby realizing Rafah called polymorphism. Dynamic Array array class template to replace the C array of predefined types.