#include<iostream>
using std::cout;
using std::endl;
class A{
protected:
    virtual void h(){cout << " A::h ";}
public:
    virtual void g() const{cout << " A::g ";}
    virtual void f(){cout << " A::f "; g(); h();}
    void m(){cout << " A::m "; g(); h();}
    virtual void k(){cout << " A::k "; h(); m();}
    virtual A* n(){cout << " A::n "; return this;}
};
class B: public A{
protected:
    virtual void h(){cout << " B::h ";}
public:
    virtual void g(){cout << " B::g ";}
    void m(){cout << " B::m "; g(); h();}
    void k(){cout << " B::k "; g(); h();}
    B* n(){cout << " B::n "; return this;}
};
class C : public B{
protected:
    virtual void h ()const{cout << " C::h";}
public:
    virtual void g(){cout << " C::g";}
    void m(){cout << " C::m"; g();k();}
    void k() const{cout << " C::k";h();}
};
int main() {
    A *p2 = new B; A *p3 = new C; B *p4 = new B; B *p5 = new C; const A *p6 = new C;
    p2->f(); cout<<endl;
    p2->m(); cout<<endl;
    p3->k(); cout<<endl;
    p3->f();cout<<endl;
    p4->m(); cout<<endl;
    p4->k();cout<<endl;
    p4->g();cout<<endl;
    p5->g();cout<<endl;
    //p6->k();cout<<endl;
    p6->g();cout<<endl;
    (p3->n())->m(); cout<<endl;
    (p3->n())->g();cout<<endl;
    (p3->n())->n()->g();cout<<endl;
    (p5->n())->g();cout<<endl;
    (p5->n())->m();cout<<endl;
    (dynamic_cast<B*>(p2))->m();cout<<endl;
    (static_cast<C*>(p3))->k();cout<<endl;
    (static_cast<B*>(p3))->n();cout<<endl;
}