#include
classA
{public:
virtual~A(){}
virtual void f()
{cout<<"A::f()"< virtual void g() {cout<<"A::g()"< }; class B:public A {public: virtual void g() {cout<<"B::g()"< virtual void k() {cout<<"B::k()"< }; void main() {A*p=new B; p->f(); p->g() p->k(); delete p; }
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