13week_7.cpp

#include <iostream>

using namespace std;

class Shape {
protected:
	string name;
	int width, height;
public:
	Shape(string n = "", int w = 0, int h = 0) { name = n; width = w; height = h; }
	virtual double getArea() { return 0; }
	string getname() { return name; }
};

class Oval :public Shape {
public:
	Oval(string n, int w, int h) : Shape(n, w, h) { }
	double getArea() {
		return width * height * 3.14;
	}
};

class Rect :public Shape {
public:
	Rect(string n, int w, int h) : Shape(n, w, h) { }
	double getArea() {
		return width * height;
	}
};

class Triangular :public Shape {
public:
	Triangular(string n, int w, int h) : Shape(n, w, h) { }
	double getArea() {
		return width * height * 0.5;
	}
};

int main() {
	Shape* p[3];
	p[0] = new Oval("빈대떡", 10, 20);
	p[1] = new Rect("찰떡", 30, 40);
	p[2] = new Triangular("토스트", 30, 40);

	for (int i = 0; i < 3; i++) {
		cout << p[i]->getname() << " 넓이는 " << p[i]->getArea() << endl;
	}

	for (int i = 0; i < 3; i++) delete p[i];
	return 0;
}