using System;
using System.Net;

class ParseAddress
{

    private static void Main(string[] args)
    {
        string IPaddress;

        if (args.Length == 0)
        {
            Console.WriteLine("Please enter an IP address.");
            Console.WriteLine("Usage:   >cs_parse any IPv4 or IPv6 address.");
            Console.WriteLine("Example: >cs_parse 127.0.0.1");
            Console.WriteLine("Example: >cs_parse 0:0:0:0:0:0:0:1");
            return;
        }
        else
        {
            IPaddress = args[0];
        }

        // Get the list of the IPv6 addresses associated with the requested host.
        Parse(IPaddress);
    }

    // This method calls the IPAddress.Parse method to check the ipAddress
    // input string. If the ipAddress argument represents a syntatically correct IPv4 or
    // IPv6 address, the method displays the Parse output into quad-notation or
    // colon-hexadecimal notation, respectively. Otherwise, it displays an
    // error message.
    private static void Parse(string ipAddress)
    {
        try
        {
            // Create an instance of IPAddress for the specified address string (in
            // dotted-quad, or colon-hexadecimal notation).
            IPAddress address = IPAddress.Parse(ipAddress);

            // Display the address in standard notation.
            Console.WriteLine("Parsing your input string: " + "\"" + ipAddress + "\"" + " produces this address (shown in its standard notation): "+ address.ToString());
        }

        catch(ArgumentNullException e)
        {
            Console.WriteLine("ArgumentNullException caught!!!");
            Console.WriteLine("Source : " + e.Source);
            Console.WriteLine("Message : " + e.Message);
        }

        catch(FormatException e)
        {
            Console.WriteLine("FormatException caught!!!");
            Console.WriteLine("Source : " + e.Source);
            Console.WriteLine("Message : " + e.Message);
        }

        catch(Exception e)
        {
            Console.WriteLine("Exception caught!!!");
            Console.WriteLine("Source : " + e.Source);
            Console.WriteLine("Message : " + e.Message);
        }
    }
}