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云代码 - c++代码库

c++ 多继承

2012-11-26 作者： 程序猿style举报

[c++]代码库

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#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;
}


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