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云代码 - c++代码库

c++ 调用多个构造函数

2012-11-26 作者：程序猿style举报

[c++]代码库

#include <iostream>
using namespace std;
 
typedef int HANDS;
enum COLOR {
    Red, Green, Blue, Yellow, White, Black, Brown
};
 
class Horse {
public:
    Horse(COLOR color, HANDS height);
    virtual ~Horse() {
        cout << "Horse destructor...\n";
    }
    virtual void Whinny() const {
        cout << "Whinny!... ";
    }
    virtual HANDS GetHeight() const {
        return itsHeight;
    }
    virtual COLOR GetColor() const {
        return itsColor;
    }
private:
    HANDS itsHeight;
    COLOR itsColor;
};
 
Horse::Horse(COLOR color, HANDS height) :
        itsColor(color), itsHeight(height) {
    cout << "Horse constructor...\n";
}
 
class Bird {
public:
    Bird(COLOR color, bool migrates);
    virtual ~Bird() {
        cout << "Bird destructor...\n";
    }
    virtual void Chirp() const {
        cout << "Chirp... ";
    }
    virtual void Fly() const {
        cout << "I can fly! I can fly! I can fly! ";
    }
    virtual COLOR GetColor() const {
        return itsColor;
    }
    virtual bool GetMigration() const {
        return itsMigration;
    }
 
private:
    COLOR itsColor;
    bool itsMigration;
};
 
Bird::Bird(COLOR color, bool migrates) :
        itsColor(color), itsMigration(migrates) {
    cout << "Bird constructor...\n";
}
 
class Pegasus: public Horse, public Bird {
public:
    void Chirp() const {
        Whinny();
    }
    Pegasus(COLOR, HANDS, bool, long);
    ~Pegasus() {
        cout << "Pegasus destructor...\n";
    }
    virtual long GetNumberBelievers() const {
        return itsNumberBelievers;
    }
 
private:
    long itsNumberBelievers;
};
 
Pegasus::Pegasus(COLOR aColor, HANDS height, bool migrates, long NumBelieve) :
        Horse(aColor, height), Bird(aColor, migrates), itsNumberBelievers(
                NumBelieve) {
    cout << "Pegasus constructor...\n";
}
 
int main() {
    Pegasus *pPeg = new Pegasus(Red, 5, true, 10);
    pPeg->Fly();
    pPeg->Whinny();
    cout << "\nYour Pegasus is " << pPeg->GetHeight();
    cout << " hands tall and ";
    if (pPeg->GetMigration())
        cout << "it does migrate.";
    else
        cout << "it does not migrate.";
    cout << "\nA total of " << pPeg->GetNumberBelievers();
    cout << " people believe it exists." << endl;
    delete pPeg;
    return 0;
}

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c++ 调用多个构造函数

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