#include <iostream>
using std::cout;
using std::endl;
class Shape {
protected:
float width, height;
public:
Shape(float w, float h) : width(w), height(h) {}
virtual float area() = 0;
void printArea()
{
cout << this->area() << endl;
}
};
class Rectangle : public Shape {
public:
Rectangle(float w, float h) : Shape(w, h) {}
float area()
{
return width * height;
}
};
class kite : public Shape {
public:
kite(float w, float h) : Shape(w, h) {}
float area()
{
return (width * height) / 2;
}
};
int main()
{
Shape *prect = new Rectangle(7, 3);
Shape *pkt = new kite(7, 3);
prect->printArea();
pkt->printArea();
delete prect;
delete pkt;
return 0;
}
/*
run:
21
10.5
*/
