#include

using namespace std;

class Shape

{

public:

    virtual float area()=0;

};

class Rectangle:public Shape

{

private:

    float length;

    float withd;

public:

    Rectangle(float _l=0,float _w=0)

    {

        length=_l;

        withd=_w;

    }

    float area()

    {

        return length*withd;

    }

};

class Circle:public Shape

{

private:

       float radius;

public:

    Circle(float _r=0)

    {

        radius=_r;

    }

    float area()

    {

        return 3.14*radius*radius;

    }

};

int main(int argc, const char * argv[])

{

    Rectangle *rectobj;

    rectobj=new  Rectangle(10.23f,20.33f);

    Circle *circle;

    circle=new Circle(102.f);

    cout