c++ 多继承

[c++]代码库

#include <iostream>
using std::cout;
using std::cin;
using std::endl;

class Horse {
public:
	Horse() {
		cout << "Horse constructor... ";
	}
	virtual ~Horse() {
		cout << "Horse destructor... ";
	}
	virtual void Whinny() const {
		cout << "Whinny!... ";
	}
private:
	int itsAge;
};

class Bird {
public:
	Bird() {
		cout << "Bird constructor... ";
	}
	virtual ~Bird() {
		cout << "Bird destructor... ";
	}
	virtual void Chirp() const {
		cout << "Chirp... ";
	}
	virtual void Fly() const {
		cout << "I can fly! I can fly! I can fly! ";
	}
private:
	int itsWeight;
};

class Pegasus: public Horse, public Bird {
public:
	void Chirp() const {
		Whinny();
	}
	Pegasus() {
		cout << "Pegasus constructor... ";
	}
	~Pegasus() {
		cout << "Pegasus destructor... ";
	}
};

const int MagicNumber = 2;
int main() {
	Horse* Ranch[MagicNumber];
	Bird* Aviary[MagicNumber];
	Horse * pHorse;
	Bird * pBird;
	int choice, i;
	for (i = 0; i < MagicNumber; i++) {
		cout << "\n(1)Horse (2)Pegasus: ";
		cin >> choice;
		if (choice == 2)
			pHorse = new Pegasus;
		else
			pHorse = new Horse;
		Ranch[i] = pHorse;
	}
	for (i = 0; i < MagicNumber; i++) {
		cout << "\n(1)Bird (2)Pegasus: ";
		cin >> choice;
		if (choice == 2)
			pBird = new Pegasus;
		else
			pBird = new Bird;
		Aviary[i] = pBird;
	}

	cout << endl;
	for (i = 0; i < MagicNumber; i++) {
		cout << "\nRanch[" << i << "]: ";
		Ranch[i]->Whinny();
		delete Ranch[i];
	}

	for (i = 0; i < MagicNumber; i++) {
		cout << "\nAviary[" << i << "]: ";
		Aviary[i]->Chirp();
		Aviary[i]->Fly();
		delete Aviary[i];
	}
	return 0;
}