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/* File : example.h */
#include <vector>
class Shape {
public:
Shape() {
nshapes++;
}
virtual ~Shape() {
nshapes--;
}
double x, y;
void move(double dx, double dy);
virtual double area(void) = 0;
virtual double perimeter(void) = 0;
static int nshapes;
static int get_nshapes();
};
class Circle : public Shape {
private:
double radius;
public:
Circle(double r) : radius(r) { }
~Circle() { }
void set_radius( double r );
virtual double area(void);
virtual double perimeter(void);
};
class Square : public Shape {
private:
double width;
public:
Square(double w) : width(w) { }
~Square() { }
virtual double area(void);
virtual double perimeter(void);
};
class ShapeContainer {
private:
typedef std::vector<Shape*>::iterator iterator;
std::vector<Shape*> shapes;
public:
ShapeContainer() : shapes() {}
~ShapeContainer();
void addShape( Shape *s );
};
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