#include <iostream>
#include "Animal.h"
#include "Dog.h"
#include "Cat.h"
#include "Cow.h"

int main() {
	 Animal* zoo[4];

    //zoo[0] = new Animal;
    zoo[0] = new Dog;
    zoo[1] = new Cat;
    zoo[2] = new Dog;
    zoo[3] = new Cow;
    for (int i=0; i < 4; i++)
      zoo[i]->voice();

    for (int i=0; i<4; i++)
        delete zoo[i];
	return 0;
}