C++基础学习(九)，类型转换运算符

#include <iostream>

using namespace std;

class Fish
{
public:
	virtual void swim()
	{
		cout<<"Fish swims in water"<<endl;
	}

	virtual ~Fish(){}

};

class Tuna : public Fish
{
public:
	void swim()
	{
		cout<<"Tuna swims in sea"<<endl;
	}

	void becomeDinner()
	{
		cout<<"Tuna become dinner"<<endl;
	}
};

class Carp : public Fish
{
public:
	void swim()
	{
		cout<<"Carp swims in lake"<<endl;
	}

	void talk()
	{
		cout<<"Carp can talk"<<endl;
	}
};

void detectFishType(Fish *pFish)
{
	Tuna *pTuna = dynamic_cast<Tuna*>(pFish);
	if (pTuna)
	{
		pTuna->becomeDinner();
	}

	Carp *pCarp = dynamic_cast<Carp*>(pFish);
	if (pCarp)
	{
		pCarp->talk();
	}

	pFish->swim();
}

//动态类型转换dynamic_cast
int main()
{
	Fish fish;
	//Fish swims in water
	detectFishType(&fish);


	Tuna tuna;
	//Tuna become dinner
	//Tuna swims in sea
	detectFishType(&tuna);

	Carp carp;
	//Carp can talk
	//Carp swims in lake
	detectFishType(&carp);

	system("pause");
	return 0;
}