WRITE A PROGRAM to show how we can use
enumeration to define symbolic constants for on/off (1,0) 
values
using System;
using System.Collections.Generic;
using System.Text;
namespace ConsoleApplication22
{
    class
TTT
    {
        public enum Mode
        {
           
off,
           
on
        }
       
static void Main(string[] args)
        {
           
Mode ob;
           
Console.WriteLine("enter 0 or 1");
           
string str = Console.ReadLine();
           
ob = (Mode)Convert.ToByte(str);
           
if (ob == Mode.off)
               
Console.WriteLine("off");
           
else if (ob == Mode.on)
               
Console.WriteLine("on");
           
else
               
Console.WriteLine("invalid number");
                Console.ReadLine();
        }
    }
}