polymorphism_test.cpp

/**
 * @brief polymorphism test
 * @file polymorphism_test.cpp
 * @author yjf_victor
 * @date 2018-04-08
 * @copyright Creative Commons — CC0 1.0 Universal (https://creativecommons.org/publicdomain/zero/1.0/)
 */

#include <iostream>
#include <vector>
using namespace std;

class Monster
{
public:
	virtual void attack() = 0;
	virtual ~Monster() {}
};

class FireMonster : public Monster
{
public:
	void attack()
	{
		cout << "Fire attack!" << endl;
	}
};

class WaterMonster : public Monster
{
public:
	void attack()
	{
		cout << "Water attack!" << endl;
	}
};

class BombMonster : public Monster
{
public:
	void attack()
	{
		cout << "Bomb attack!" << endl;
	}
};

void init(vector <Monster *> &monster_vec)
{
	monster_vec.push_back(new FireMonster);
	monster_vec.push_back(new WaterMonster);
	monster_vec.push_back(new BombMonster);
}

void clean_up(vector <Monster *> &monster_vec)
{
	for (Monster * pmonster : monster_vec)
		delete pmonster;
}

int main()
{
	vector <Monster *> monster_vec;
	init(monster_vec);
	
	for (Monster * pmonster : monster_vec)
		pmonster->attack();
	
	clean_up(monster_vec);
	return 0;
}