Polymorphism Write a simple polymorphic program of your choi

Polymorphism: Write a simple polymorphic program of your choice that contains at least one virtual function, one concrete function and one abstract class.

Solution

#include <iostream>
using namespace std;

class Shape //virtual base class
{
public:
virtual void Area()=0; //pure vrtual function Area()

};

class Circle : public Shape //inheritance
{
   private:
   double radius;
public:
Circle(double r) //constructor
{
    radius =r;
}
double getRadius() //get methods
{
    return radius;
}
void Area() //redefining Area() function
{
    cout << \"\ Area of circle :\"<< (3.14*getRadius()*getRadius());
}
};

class Rectangle : public Shape //inheriting abstract base class Shape
{
   private:
   double length,width;
public:
Rectangle(double l,double w) //constructor to set values
{
    length =l;
    width = w;
}
double getLength() //get methods
{
    return length;
}
double getWidth()
{
    return width;
}

void Area() //redefining Area() function
{
    cout << \"\ Area of rectangle : \"<< (getLength()*getWidth());
}
};
class Sphere : public Shape //inheriting abstract base class
{
   private:
   double radius;
   public:
   Sphere(double r) //constructor to set radius
   {
       radius=r;
   }
   double getRadius() //get method
   {
       return radius;
   }
   void Area() //redefining virtual method
   {
       cout<<\"\ Area of sphere :\"<<(4*3.14*getRadius()*getRadius());
   }
};

int main()
{
Rectangle rect(4.5,10.0); //objects of classes
Circle cir(3.3);
Sphere sphr(3.3);
  
Shape *r = &rect; //base class pointer stores the address of derived class object
Shape *c = &cir;
Shape *s = &sphr;
  

r->Area(); //base class pointer is used to call different methods of different classes ,polymorphism
c->Area();
s->Area();
  

return 0;
}

output:

Success time: 0 memory: 3468 signal:0