Little Exercises from a Book - Programming Microsoft Visual C# 2008: The Language

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace HelloNamespace
    {  

    class Greetings
        {
        public static void DisplayEnglish()
            {
            Console.WriteLine("Hello, world!");
            }
        public static void DisplayItalian()
            {
            Console.WriteLine("Ciao, mondo!");
            }
        public static void DisplaySpanish()
            {
            Console.WriteLine("Hola, imundo!");
            }
        }
  

delegate void delGreeting();

class HelloWorld
        {
        static void Main(string[] args) {
            try {
                int iChoice = int.Parse(args[0]);
                delGreeting [] arrayofGreetings={
                    new delGreeting(Greetings.DisplayEnglish),
                    new delGreeting(Greetings.DisplayItalian),
                    new delGreeting(Greetings.DisplaySpanish)};
                  
                arrayofGreetings[iChoice - 1]();
            }
            catch(Exception ex) {
                Console.WriteLine(ex.Message);
                Console.WriteLine("Press any key to continue. . .");
                Console.ReadKey();
            }
        }
    }
}