9a2e48b447
Apply changes of b115c984a (More cleaning up of the class examples,
2014-05-05) and other similar commits to the header in this branch too.
34 lines
574 B
C++
34 lines
574 B
C++
/* File : example.h */
|
|
|
|
class Shape {
|
|
public:
|
|
Shape() {
|
|
nshapes++;
|
|
}
|
|
virtual ~Shape() {
|
|
nshapes--;
|
|
}
|
|
double x, y;
|
|
void move(double dx, double dy);
|
|
virtual double area() = 0;
|
|
virtual double perimeter() = 0;
|
|
static int nshapes;
|
|
};
|
|
|
|
class Circle : public Shape {
|
|
private:
|
|
double radius;
|
|
public:
|
|
Circle(double r) : radius(r) { }
|
|
virtual double area();
|
|
virtual double perimeter();
|
|
};
|
|
|
|
class Square : public Shape {
|
|
private:
|
|
double width;
|
|
public:
|
|
Square(double w) : width(w) { }
|
|
virtual double area();
|
|
virtual double perimeter();
|
|
};
|