what are the definitions of the members of cylinder class Implement them in regards to circle class

class circle

{

public:

void print() const;

void setRadius(double);

void setCenter(double, double);

void getCenter(double&, double&);

double getRadius();

double area();

circle();

circle(double, double, double);

private:

double x;

double y;

double radius;

};

class cylinder : public circle

{

public:

void print() const;

void setHeight(double);

double getHeight();

double volume();

double area();

cylinder();

cylinder(double, double, double, double);

private:

double height;

};