代码示例如下：

#include<iostream>
using namespace std;

class AbstractDrinking
{
public:
	virtual void Soil() = 0;//第一步、煮开水
	virtual void Brew() = 0;//第二步、冲泡
	virtual void PourInCup() = 0;//第三步、倒入杯中
	virtual void AddSomething() = 0;//第四步、加入辅料
};

void makeDrink(AbstractDrinking* abd)
{
	abd->Soil();
	abd->Brew();
	abd->PourInCup();
	abd->AddSomething();
}

class Coffee : public AbstractDrinking
{
public:
	void Soil()
	{
		cout << "煮咖啡" << endl << "第一步、煮沸百岁山" << endl;
	}

	void Brew()
	{
		cout << "第二步、冲泡咖啡" << endl;
	}
	void PourInCup()
	{
		cout << "第三步、倒入杯中" << endl;
	}
	void AddSomething()
	{
		cout << "第四步、加入糖和牛奶" << endl << endl;
	}
};

class Tea : public AbstractDrinking
{
	void Soil()
	{
		cout << "泡茶叶" << endl << "第一步、煮沸怡宝" << endl;
	}

	void Brew()
	{
		cout << "第二步、冲泡茶叶" << endl;
	}
	void PourInCup()
	{
		cout << "第三步、倒入杯中" << endl;
	}
	void AddSomething()
	{
		cout << "第四步、加入枸杞" << endl;
	}
};

int main() {
	AbstractDrinking* cof = new Coffee;
	AbstractDrinking* tea = new Tea;

	makeDrink(cof);
	makeDrink(tea);
}

结果如下：