多态性5

#include<iostream>
using namespace std;
class Base{
public:
~Base();
};
Base::~Base() {
cout<<"Base destructor"<<endl;
}
class Derived:public Base{
public:
Derived();
~Derived();
private:
int *p;
};
Derived::Derived() {
cout<<"Derived destructor"<<endl;
delete p;
}
void fun(Base* b){
delete b;
}
int main()
{
Base *b=new Derived();
fun(b);
return 0;
}