#include <iostream>The example has two classes Point and Circle, modelling a point and a circle. A Point has x and y coordinates. The Circle class is derived from the Point class and adds a radius. Both classes include a Draw() member function. To keep this example short the output is just text.
#include <stdio.h>
class Point
{
int x,y;
public:
Point(int atx,int aty ) ; // Constructor
inline virtual ~Point() ; // Destructor
virtual void Draw() ;
};
class Circle : public Point {
int radius;
public:
Circle(int atx,int aty,int theRadius) ;
inline virtual ~Circle() ;
virtual void Draw() ;
};
Point ::Point(int atx,int aty) {
x = atx;
y = aty;
}
inline Point::~Point ( void ) {
std::cout << "Point Destructor called\n";
}
void Point::Draw( void ) {
std::cout << "Point::Draw point at " << x << " " << y << std::endl;
}
Circle::Circle(int atx,int aty,int theRadius) : Point(atx,aty) {
radius = theRadius;
}
inline Circle::~Circle() {
std::cout << "Circle Destructor called" << std::endl;
}
void Circle::Draw( void ) {
Point::Draw() ;
std::cout << "circle::Draw point " << " Radius "<< radius << std::endl;
}
int main() {
Circle ACircle(10,10,5) ;
ACircle.Draw() ;
return 0;
}
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