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#ifndef SHAPES_H
#define SHAPES_H
namespace shapes {
int constructor_count = 0;
int destructor_count = 0;
class Shape
{
public:
virtual float area() const = 0;
Shape() { constructor_count++; }
virtual ~Shape() { destructor_count++; }
};
class Rectangle : public Shape
{
public:
Rectangle() { }
Rectangle(int width, int height)
{
this->width = width;
this->height = height;
}
float area() const { return width * height; }
int width;
int height;
int method(int arg) {
return width * height + arg;
}
};
class Square : public Rectangle
{
public:
Square(int side) : Rectangle(side, side) { this->side = side; }
int side;
};
class Ellipse : public Shape {
public:
Ellipse(int a, int b) { this->a = a; this->b = b; }
float area() const { return 3.1415926535897931f * a * b; }
int a, b;
};
class Circle : public Ellipse {
public:
Circle(int radius) : Ellipse(radius, radius) { this->radius = radius; }
int radius;
};
class Empty : public Shape {
public:
float area() const { return 0; }
};
class EmptyWithDocstring : public Shape {
public:
float area() const { return 0; }
};
}
#endif
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