#include <iostream>
using namespace std;
class A
{
public:
    A()
    {
        cout<<"A";
    }
    ~A()
    {
        cout<<"~A";
    }
};
class B :public A
{
    A *p;
public:
    B()
    {
        cout<<"B";
        p=new A();
    }
    ~B()
    {
        cout<<"~B";
        delete p;
    }
};
int main()
{
    B obj;
    return 0;
}
运行结果:
知识点总结:
基类构造子类构造派生类构造派生类析构子类析构基类析构
原文地址:http://blog.csdn.net/ljd939952281/article/details/45787401