#include<iostream>
class Interface
{ public:
	virtual void foo()=0;
	virtual int bar()=0;
	virtual char mumble()=0;

};

class Implementation : public Interface
{ public:
	void foo(){ std::cerr<<"Implementation::foo()\n"; }
	int bar(){ return 42;}
	char mumble(){return 'a';}
};

class Client
{ public:
	static void wimble()
	{
		Interface* i ;

		i= new Implementation();

		i->foo();

	}
};

main(){
	Client::wimble();
}