Return different value to the operating system based on the argument length

   
 

using System;
class SayHello {
    public static int Main(string[] args) {
        if (args.Length > 0) {
            foreach (string arg in args) {
                if (arg.Equals("/help")) {
                    Console.WriteLine("Run this program as follows:" +
                              "sayhello.exe [name1] ");
                    return (1);
                } else
                    Console.WriteLine("Hello " + "{0}", arg);
            }
            return (0);
        } else
            Console.WriteLine("For help, run sayhello.exe /help");
        return (2);
    }
}