【TOJ 5254】C++实验：继承中的构造函数和析构函数

#include<iostream>
using namespace std;
class Base{
    public:
        int x;
        Base(int a=0):x(a)
        {
            x=a;
            cout<<"Base Constructor "<<x<<endl;
        }
        virtual~Base(){cout<<"Base Destructor "<<x<<endl;}
}; 
class Derived:public Base{
    public:
        int y;
        Derived(int a=0,int b=0):Base(a),y(b)
        {
            cout<<"Derived Constructor "<<y<<endl;
        }
        ~Derived()
        {
            cout<<"Derived Destructor "<<y<<endl;
        }
};
int main()
{
    Base *p = new Derived(1, 2);
    delete p;
    Base b;
    Derived d;
    return 0;
}