/* Austria,Michael Vaughn

 * Tabara, Daniel Brycz

 * Dumaguete Knight John

 * De Leon, Joseph Neil Allan

 * Marigon, Ryan Angelo*/

​

using System;

​

namespace inheritance

{

    class Program

    {

        static void Main(string[] args)

        {

            IShape r = new Rectangle(3, 2);

            r.getArea();

            IShape c = new Circle(2);

            c.getArea();

             Console.ReadKey();

        }

​

    }

    interface IShape

    {

        void getArea();

    }

    abstract class Shape : IShape

    {

        protected int width, height;

        protected double pie, radius;

        public abstract void getArea();

        public Shape()

        {

            Console.WriteLine("'Inheritance Implementation'");

        }

    }

    class Rectangle : Shape

    {

        private double area;

        public Rectangle(int w, int h)

        {

            width = w;

            height = h;

            Console.WriteLine("Area of a Rectangle");

        }

        public override void getArea()

        {

            area = width * height;

            Console.WriteLine("Area = Width * Height");

            Console.WriteLine("Area = " + width + " * " + height);

            Console.WriteLine("Area = " + area);

            Console.WriteLine();

        }

    }

    class Circle : Shape

    {

        private double area;

        public Circle(double r)

        {

            pie = 2.14;

            radius = r;

            Console.WriteLine("Area of a Circle");

        }

        public override void getArea()

        {

            area = pie * (radius * radius);

            Console.WriteLine("Area = Pie * (Radius * Radius)");

            Console.WriteLine("Area = " + pie + " * (" + radius + " * " + radius + ")");

            Console.WriteLine("Area = " + area);

            Console.WriteLine();

        }

    }

}