blAckEnEd

#include <stdio.h>template<class T>class Delegate{	typedef void (T::*Method)(void);	T * obj_ptr;	Method func_ptr;public:	Delegate()	{		;	}		Delegate(T * obj)	{		obj_ptr = obj;	}		Delegate(const Delegate<T> &other)	{		this->obj_ptr = other->obj_ptr;		this->func_ptr = other->func_ptr;	}		void AddMethod(Method func)	{		func_ptr = func;	}		void Invoke(void)	{		(obj_ptr->*func_ptr)();	}};class Base{	;};class B : Base{public:	Delegate<Base> * d;		B(void)	{		d = new Delegate<Base>();	}};class A : Base{	B * b;public:	A(void)	{		b = new B();		b->d = new Delegate<A>(this);	}		void foo(void)	{		printf("Hello, world!\n");	}};int main (int argc, char * const argv[]) {	A * a;	Delegate<A> * d = new Delegate<A>(a);		d->AddMethod(&A::foo);	d->Invoke();	    return 0;}