模板模式

#include <iostream>
using namespace std;

class Game
{
public:
    virtual ~Game() {}
public:
    virtual void initialize() = 0;
    virtual void startPlay() = 0;
    virtual void endPlay() = 0;
    virtual void play()
    {
        initialize(); //初始化游戏
        startPlay(); //开始游戏
        endPlay();  // 结束游戏
    }
};

class FootballGame : public Game
{
public:
    virtual void initialize()
    {
        cout << "FootballGame initialize" << endl;
    }
    
    virtual void startPlay()
    {
        cout << "FootballGame begin" << endl;
    }
    
    virtual void endPlay()
    {
        cout << "FootballGame end" << endl;
    }
};

class BasketballGame : public Game
{
public:
    virtual void initialize()
    {
        cout << "BasketballGame initialize" << endl;
    }

    virtual void startPlay()
    {
        cout << "BasketballGame begin" << endl;
    }

    virtual void endPlay()
    {
        cout << "BasketballGame end" << endl;
    }
};

void test()
{
    Game *game = new BasketballGame();
    game->play();
    delete game;
    game = new FootballGame();
    game->play();
    delete game;
    game = NULL;

}

int main()
{
    test();
    cin.get();
    return 0;
}