AREA OF AN OBJECT (MULTIPLE INHERITANCE)

PROGRAM:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace ConsoleApplication6

{

    interface Area

       {

double Compute(double x);

}

class Square:Area

{

public double Compute(double x)

  {

return(x*x);

 }

}

class Circle:Area

   {

public double Compute(double x)

           {

return(Math.PI *x*x);

           }

       }

class Program

    {

static void Main(string[] args)

        {

            Square sqr=new Square();

            Circle cr=new Circle();

            Area area=(Area)sqr;

Console.WriteLine("Area of Square="+area.Compute(10));

area=(Area)cr;

Console.WriteLine("Area of Circle="+ area.Compute(10));

Console.ReadLine();

        }

    }

}