// Do it yourself Run Time Type Identification
// All objects here are of class A,B, or C.
// A pointer to an object of class Identified Type is able to
// find out what kind of object it is pointing at.

#include <iostream.h>

class Identified_Type {
public:
	virtual int type()=0;
	void print(){ cout << this->type() <<endl;}
};
class A:public Identified_Type{
public:
	int type(){return 1;}
};
class B:public Identified_Type{
public:
	int type(){return 2;}
};
class C:public Identified_Type{
public:
	int type(){return 3;}
};



int main()
{
	A a; B b; C c;
	Identified_Type* p;

	cout << a.type()<<endl;
	cout << b.type()<<endl;
	cout << c.type()<<endl;

	p=&a; cout << p->type() << endl;
	p=&b; cout << p->type() << endl;
	p=&c; cout << p->type() << endl;

	a.print();
	b.print();
	c.print();


	p=&a; p->print();
	p=&b; p->print();
	p=&c; p->print();

	return 0;
}