第11周 自选阅读3

#include<iostream>
using namespace std;
class my_base
{
    int a,b;
public:
    my_base(int x,int y)
    {
        a=x;
        b=y;
    }
    virtual void show()
    {
        cout<<"base";
        cout<<a<<" "<<b<<endl;
    }
};
class my_class: public my_base
{
    int c;
public:
    my_class(int x,int y,int z):my_base(x,y)
    {
        c=z;
    }
    void show()
    {
        cout<<"my_class "<<"c="<<c;
    }
};
int main()
{
    my_base mb(50,50),*mp;
    my_class mc(10,20,30);
    mp=&mb;
    mp->show();
    mp=&mc;
    mp->show();
    return 0;
}

运行结果：