using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        Output("Hello", "World");

        var parameters = new List<object>();

        parameters.AddRange(new object[] {"one", 1});

        parameters.AddRange(new object[] {"two", 2});

        parameters.AddRange(new object[] {"three", 3});

        var gotValidResponse = false;

        do

        {

            Console.WriteLine("Should we include the the current time? (y/n)");

            switch(Console.ReadLine().ToLowerInvariant())

            {

                case "y":

                    parameters.AddRange(new object[] {"Time", DateTime.Now});

                    gotValidResponse = true;

                    break;

                case "n":

                    Console.WriteLine("Fine, suit yourself!!!");

                    gotValidResponse = true;

                    break;

            }

        } while(!gotValidResponse);

        Output(parameters);

    }

    public static void Output(params object[] parameters)

    {

        if (parameters.Length % 2 == 1)

        {

            throw new ArgumentException($"{nameof(parameters)} must have an even length ", nameof(parameters));

        }

        Console.WriteLine("Name : Value");

        Console.WriteLine("----------");

        for (int i = 0; i < parameters.Length; i += 2)

        {

            string name = parameters[i] as string;

            object value = parameters[i + 1];

            Console.WriteLine($"{name} : {value}");

        }

    }

}