// Listing 12.9 Multiple virtual functions called in turn

#include <iostream>
using namespace std;

class Mammal
{
public:
	Mammal():itsAge(1) { }
	~Mammal() { }
	virtual void Speak() const { cout << "Mammal speak!\n"; }

protected:
	int itsAge;
};

class Dog : public Mammal
{
public:
	void Speak()const { cout << "Woof!\n"; }
};

class Cat : public Mammal
{
public:
	void Speak()const { cout << "Meow!\n"; }
};

class Horse : public Mammal
{
public:
	void Speak()const { cout << "Winnie!\n"; }
};

class Pig : public Mammal
{
public:
	void Speak()const { cout << "Oink!\n"; }
};

int main()
{
	Mammal* theArray[5];
	Mammal* ptr;
	int choice = 0;
	int i = 0;

	for ( i = 0; i < 5; i++)
	{
		cout << "(1)dog (2)cat (3)horse (4)pig: ";
		cin >> choice;
	
		switch (choice)
		{						// Speak() outputs
		case 1: ptr = new Dog;		// Woof!
			break;
		case 2: ptr = new Cat;		// Meow!
			break;
		case 3: ptr = new Horse;	// Winnie!
			break;
		case 4: ptr = new Pig;		// Oink! 
			break;
		default: ptr = new Mammal;	// Mammal speak!
			break;
		}

		theArray[i] = ptr;
	}
	for (i = 0; i < 5; i++)
	{
		theArray[i]->Speak();
	}

	return 0;
}