Abstract.cpp

#include "stdafx.h"
#include <iostream>
#include <string>

using namespace std;

class Animal {
public:
	virtual void run() = 0;
	virtual void speak() = 0;
};

class Dog : public Animal {
public:
	virtual void speak() {
		cout << "Woof!" << endl;
	}
};

class Labrador : public Dog {
public:
	Labrador() {
		cout << "new labrador" << endl;
	}

	virtual void run() {
		cout << "Labrador running" << endl;
	}
};

void test(Animal &a) {
	a.run();
}

int main4(int argc, _TCHAR* argv[])
{
	Labrador labs[5];

	Labrador lab;
	lab.run();
	lab.speak();

	Animal *animals[5];
	animals[0] = &lab;

	animals[0]->speak();

	test(lab);

	return 0;
}