//橋接模式，合成，聚合複用原則
#include<iostream>
using namespace std;

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

class Notepad :public Soft
{
public:
    void run()
    {
        cout << "執行Notepad++軟體" << endl;
    }
};

class QtCreator :public Soft
{
public:
    void run()
    {
        cout << "執行QtCreator軟體"
 
 << endl;
    }
};

class Computer
{
protected:
    Soft* m_soft;
public:
    void setsoft(Soft* soft)
    {
        m_soft = soft;
    }
    virtual void Run() = 0;
};

class Lenovo :public Computer
{
public:
    Lenovo()
    {
        cout << "聯想電腦正在開機..." << endl;
    }
    void Run()
    {
        this
 
->m_soft->run();
    }
};

class Dale :public Computer
{
public:
    Dale()
    {
        cout << "戴爾電腦正在開機..." << endl;
    }
    void Run()
    {
        this->m_soft->run();
    }
};

int main()
{
    Computer* lenovo = new Lenovo();
    lenovo->setsoft(new Notepad());
    lenovo->Run();
    lenovo->setsoft(new
 
 QtCreator());
    lenovo->Run();

    cout << endl;
    Computer* dale = new Dale();

    dale->setsoft(new Notepad());
    dale->Run();
    dale->setsoft(new QtCreator());
    dale->Run();

    system("pause");

    return 0;
}

輸出：

聯想電腦正在開機...
執行Notepad++軟體
執行QtCreator軟體

戴爾電腦正在開機...
執行Notepad++軟體
執行QtCreator軟體
請按任意鍵繼續. . .