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- Listing 4 - class rectangle derived from shape
-
- class rectangle : public shape
- {
- public:
- rectangle(palette c, double h, double w);
- double area() const;
- const char *name() const;
- ostream &put(ostream &os) const;
- private:
- double height, width;
- };
-
- rectangle::rectangle(palette c, double h, double w)
- : shape(c), height(h), width(w) { }
-
- double rectangle::area() const
- {
- return height * width;
- }
-
- const char *rectangle::name() const
- {
- return "rectangle";
- }
-
- ostream &rectangle::put(ostream &os) const
- {
- return shape::put(os) << " with height = " << height
- << " and width = " << width;
- }
-