第十四周--多态性、虚函数和抽象类（4）

/*Copyright (c) 烟台大学计算机与控制工程学院Author:刘慧艳Created：2014.05.27Edition：V.1.0Describe：*/#include <iostream>using namespace std;class BASE{private :    char c;public:    BASE(char n):c(n){}    virtual ~BASE()    {        cout<<c;    }};class DERIVED:public BASE{    private:    char c;    public:    DERIVED(char n):BASE(n+1),c(n){}    ~DERIVED()    {        cout<<c;    }};int main(){    DERIVED d('X')    return 0;}