using System;

​

namespace OperatorOvlApplication {

   class Box {

      private double length;    // Length of a box

      private double breadth;   // Breadth of a box

      private double height;    // Height of a box

      public double getVolume() {

         return length * breadth * height;

      }

      public void setLength( double len ) {

         length = len;

      }

      public void setBreadth( double bre ) {

         breadth = bre;

      }

      public void setHeight( double hei ) {

         height = hei;

      }

      // Overload + operator to add two Box objects.

      public static Box operator+ (Box b, Box c) {

         Box box = new Box();

         box.length = b.length + c.length;

         box.breadth = b.breadth + c.breadth;

         box.height = b.height + c.height;

         return box;

      }

      public static bool operator == (Box lhs, Box rhs) {

         bool status = false;

         if (lhs.length == rhs.length && lhs.height == rhs.height 

            && lhs.breadth == rhs.breadth) {

            status = true;

         }

         return status;

      }

      public static bool operator !=(Box lhs, Box rhs) {

         bool status = false;

         if (lhs.length != rhs.length || lhs.height != rhs.height || 

            lhs.breadth != rhs.breadth) {

            status = true;

         }

         return status;

      }

      public static bool operator <(Box lhs, Box rhs) {

         bool status = false;

         if (lhs.length < rhs.length && lhs.height < rhs.height 

            && lhs.breadth < rhs.breadth) {

            status = true;

         }

         return status;

      }

      public static bool operator >(Box lhs, Box rhs) {

         bool status = false;

         if (lhs.length > rhs.length && lhs.height > 

            rhs.height && lhs.breadth > rhs.breadth) {

            status = true;

         }

         return status;

      }

      public static bool operator <=(Box lhs, Box rhs) {

         bool status = false;

         if (lhs.length <= rhs.length && lhs.height 

            <= rhs.height && lhs.breadth <= rhs.breadth) {

            status = true;

         }

         return status;

      }

      public static bool operator >=(Box lhs, Box rhs) {

         bool status = false;

         if (lhs.length >= rhs.length && lhs.height 

            >= rhs.height && lhs.breadth >= rhs.breadth) {

            status = true;

         }

         return status;

      }

      public override string ToString() {

         return String.Format("({0}, {1}, {2})", length, breadth, height);

      }

   }

   public class Tester {

      public static void Main(string[] args) {

         Box Box1 = new Box();   // Declare Box1 of type Box

         Box Box2 = new Box();   // Declare Box2 of type Box

         Box Box3 = new Box();   // Declare Box3 of type Box

         Box Box4 = new Box();

         double volume = 0.0;    // Store the volume of a box here

         // box 1 specification

         Box1.setLength(6.0);

         Box1.setBreadth(7.0);

         Box1.setHeight(5.0);

         // box 2 specification

         Box2.setLength(12.0);

         Box2.setBreadth(13.0);

         Box2.setHeight(10.0);

         //displaying the Boxes using the overloaded ToString():

         Console.WriteLine("Box 1: {0}", Box1.ToString());

         Console.WriteLine("Box 2: {0}", Box2.ToString());

         // volume of box 1

         volume = Box1.getVolume();

         Console.WriteLine("Volume of Box1 : {0}", volume);

         // volume of box 2

         volume = Box2.getVolume();

         Console.WriteLine("Volume of Box2 : {0}", volume);

         // Add two object as follows:

         Box3 = Box1 + Box2;

         Console.WriteLine("Box 3: {0}", Box3.ToString());

         // volume of box 3

         volume = Box3.getVolume();

         Console.WriteLine("Volume of Box3 : {0}", volume);

         //comparing the boxes

         if (Box1 > Box2)

            Console.WriteLine("Box1 is greater than Box2");

         else

            Console.WriteLine("Box1 is not greater than Box2");

         if (Box1 < Box2)

            Console.WriteLine("Box1 is less than Box2");

         else

            Console.WriteLine("Box1 is not less than Box2");

         if (Box1 >= Box2)

            Console.WriteLine("Box1 is greater or equal to Box2");

         else

            Console.WriteLine("Box1 is not greater or equal to Box2");

         if (Box1 <= Box2)

            Console.WriteLine("Box1 is less or equal to Box2");

         else

            Console.WriteLine("Box1 is not less or equal to Box2");

         if (Box1 != Box2)

            Console.WriteLine("Box1 is not equal to Box2");

         else

            Console.WriteLine("Box1 is not greater or equal to Box2");

         Box4 = Box3;

         if (Box3 == Box4)

            Console.WriteLine("Box3 is equal to Box4");

         else

            Console.WriteLine("Box3 is not equal to Box4");

​

      }

   }

}