| /* File : example.h */ | |
| #include <stdio.h> | |
| 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() { } | |
| 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); | |
| }; | |
| const char *overloaded( int i ); | |
| const char *overloaded( double d ); | |
| const char *overloaded( const char * str ); | |
| const char *overloaded( const Circle& ); | |
| const char *overloaded( const Shape& ); | |