软件设计⑨|桥接模式

 （1）C++

效果如下：

类图如下：

 

代码如下：

#include <iostream>
#ifndef __ROAD__H__
#define __ROAD__H__
using namespace std;

class Road {
public:
    virtual void run() = 0;
};

class UnpaveRoad : public Road {
public:
    void run() override {
        cout << "run on the speed way" << endl;
    }
};

class CementRoad : public Road {
public:
    void run() override {
        cout << "run on the street" << endl;
    }
};

class BusOnUnpaveRoad : public UnpaveRoad {
public:
    void run() override {
        cout << "Bus行驶在沥青路上" << endl;
    }
};

class CarOnUnpaveRoad : public UnpaveRoad {
public:
    void run() override {
        cout << "Car行驶在沥青路上" << endl;
    }
};

class BusOnCementRoad : public CementRoad {
public:
    void run() override {
        cout << "Bus行驶在水泥路上" << endl;
    }
};

class CarOnCementRoad : public CementRoad {
public:
    void run() override {
        cout << "Car行驶在水泥路上" << endl;
    }
};
#endif

int main() {
    Road* busOnUnpaveRoad = new BusOnUnpaveRoad;
    Road* carOnUnpaveRoad = new CarOnUnpaveRoad;
    Road* busOnCementRoad = new BusOnCementRoad;
    Road* carOnCementRoad = new CarOnCementRoad;

    busOnUnpaveRoad->run();
    carOnUnpaveRoad->run();
    busOnCementRoad->run();
    carOnCementRoad->run();

    return 0;
}

参考链接：https://www.cnblogs.com/yuandonghua/p/11836249.html