using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Delegate{    public delegate void Task();    class Program    {                static void Main(string[] args)        {            Task[] task = { MethodA, MethodB, MethodC};            string resp;            do            {                                Console.WriteLine("Task-A");                Console.WriteLine("Task-B");                Console.WriteLine("Task-C");                Console.WriteLine("X exit");                resp = Console.ReadLine();                if (resp.ToUpper() == "X")                {                    break;                }                try                {                    int choice = int.Parse(resp) - 1;                    task[choice]();                }                catch {                    Console.WriteLine("Invalid number");                }            } while (true);            Console.ReadLine();        }        public static void MethodA() {            Console.WriteLine("A doing");        }        public static void MethodB()        {            Console.WriteLine("B doing");        }        public static void MethodC()        {            Console.WriteLine("C doing");        }    }}