#include<iostream>

 using namespace std;

 class Parent{

      public:

          int x;

          Parent *p;

      public:

          Parent(){}

          Parent(int x){

            this->x=x;

            p=this;

         }

          virtual void f(){

             cout<<"Parent::f()"<<endl;

         }

         void g(){

             cout<<"Parent::g()"<<endl;

         }

         void h(){

             cout<<"Parent::h()"<<endl;

             f();

             g();

             y();

             cout<<"LOOK HERE: "<<x<<endl;

         }

         private:

             void y(){

                 cout<<"Parent::y()"<<endl;

             }

 };

 class Child : public Parent{

     public:

         int x;

     public:

         Child(){}

         Child(int x) : Parent(x+){//正确的调用父类构造函数要写在初始化型参列表中 

              //这样企图调用父类的构造函数是错误的，因为这是另外创造了一个临时对象，函数结束之后就什么都没有了！

             //Parent(x+5);

             this->x=x;

         }

         void f(){

             cout<<"Child f()"<<endl;

         }

         void g(){

             cout<<"Child g()"<<endl;

         }

 };

 int main(){

     //例一

     Child *ch=new Child();

     ch->h();

     cout<<endl;

     //例二：

     ch=new Child();

     ch->h();

     cout<<endl;

     //例三：

     ch->p->h();

     return ;

 } 

/*

Parent::h()

Child f()

Parent::g()

Parent::y()

LOOK HERE: 9306304

Parent::h()

Child f()

Parent::g()

Parent::y()

LOOK HERE: 10

Parent::h()

Child f()

Parent::g()

Parent::y()

LOOK HERE: 10

*/