[C++]virtual_example

virtual_ex.cpp

#include <iostream>

using namespace std;

class Food {
	public :
		virtual void SetPrice(int myprice) = 0; //순수 가상함수
		int GetPrice(){
			return price;
		} 
	protected :
		int price;			
};

class Fruit : public Food{
	public :
		void SetPrice(int myprice){
			price = myprice - 20;
		}
};

class Fish : public Food {
	public :
		void SetPrice(int myprice){
			price = myprice / 2;
		}
};

int main()
{
	Food *pFood;
	Fruit myFruit;
	Fish myFish;
	
	pFood = &myFruit;
	pFood -> SetPrice(100);
	cout << "myFruit의 Price = " << pFood -> GetPrice() << endl;
	
	pFood = &myFish;
	pFood -> SetPrice(100) ;
	cout << "myFish의 Price = " << pFood -> GetPrice() << endl;
	
	return 0; 
}