WRITE A CLASS TO DEMOSTRATE POLYMORPHISM

 #include<iostream>

using namespace std;

class Shape

{

public:

 virtual float area()=0;

 virtual float perimeter()=0;

};

class Rectangle:public Shape

{

private:

 float length;

 float breadth;

public:

 Rectangle(int l=1,int b=1){length=1;breadth=b;}

 float area(){ return length*breadth;}

 float perimeter(){return 2*(length+breadth);}

};

class Circle:public Shape

{

private:

 float radius;

public:

 Circle(float r){radius=r;}

 float area(){return 3.1425*radius*radius;}

 float perimeter(){return 2*3.1425*radius;}

};

int main()

{

 Shape *s=new Rectangle(10,5);

 cout<<"Area of Rectangle "<<s->area()<<endl;

 cout<<"Perimeter of Rectangle "<<s->perimeter()<<endl;

 s=new Circle(10);

 cout<<"Area of Circle "<<s->area()<<endl;

 cout<<"Perimeter of Circle "<<s->perimeter()<<endl;

}