static void Main(string[] args)
        {
            Box    Box1 = new Box();              // Declare Box1 of type Box
            Box    Box2 = new Box(6.0, 5.4, 4.4); // Declare Box2 of type Box
            Box    Box3 = new Box(7.5, 2.2, 4.4, "red");
            double volume;

            // 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);

            // 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);

            // volume of box 3
            volume = Box3.getVolume();
            Console.WriteLine("Volume of Box3 : {0}", volume);

            // Box 4
            Box Box4 = new Box(10, 20, 30);

            Console.WriteLine("Volume of Box4: {0}", Box4.getVolume());

            Console.ReadKey();
        }
        static void Main(string[] args)
        {
            //Base variable and datatype declaration
            int num;

            //Create object of Class Type Box
            Box box  = new Box();
            Box box2 = new Box();

            //Create object of Class Type Person
            Person person = new Person();

            Console.WriteLine("Enter Box 1 first number:");
            double n1 = double.Parse(Console.ReadLine());

            Console.WriteLine("Enter Box 1 second number:");
            double n2 = double.Parse(Console.ReadLine());

            Console.WriteLine("Enter Box 1 third number:");
            double n3 = double.Parse(Console.ReadLine());

            //Setting values in objects properties
            box.Length  = n1;
            box.Breadth = n2;
            box.Height  = n3;
            double volume = box.getVolume();
            double area   = box.getArea();

            Console.WriteLine("Enter Box 2 first number:");
            n1 = double.Parse(Console.ReadLine());
            Console.WriteLine("Enter Box 2 second number:");
            n2 = double.Parse(Console.ReadLine());
            Console.WriteLine("Enter Box 2 third number:");
            n3 = double.Parse(Console.ReadLine());

            //Setting values in objects properties
            box2.Length  = n1;
            box2.Breadth = n2;
            box2.Height  = n3;

            // getting values from objects properties
            Console.WriteLine($"Box 1 Dimensions are {box.Length}, {box.Breadth} and {box.Height}");
            Console.WriteLine($"Box 1 volume is {volume}");
            Console.WriteLine($"Box 1 Area is {area}");

            Console.WriteLine($"Box 2 Dimensions are {box2.Length}, {box2.Breadth} and {box2.Height}");
            Console.WriteLine($"Box 2 volume is {box2.getVolume()}");
            Console.WriteLine($"Box 2 Area is {box2.getArea()}");


            Console.WriteLine("Enter your first name");
            string firstName = Console.ReadLine();

            Console.WriteLine("Enter your last name");
            string lastName = Console.ReadLine();

            //Setting values in objects properties of Person Class
            person.FirstName = firstName;
            person.LastName  = lastName;
            string fullName = person.getFullName();


            // getting values from objects properties
            Console.WriteLine($"Your Full Name is {fullName}");
        }