using static System.DateTime;

using static System.Console;

public class Program

{

    public static void Main()

    {

        // Declare and assing the variable "hour" from the current date time now's .Hour property.

        // The hour component, expressed as a value between 0 and 23.

        var hour = Now.Hour;

        // Just to see what time it is that we're working with, print now and the hour...

        WriteLine(Now);     

        WriteLine($"Hour {hour}");

        if (hour < 12) // From midnight to 11 AM...

        {

            WriteLine("Good morning!");

        }

        else if (hour < 16) // We know that it is 12 or greater and less than 16

        {

            WriteLine("Good afternoon!");

        }

        else if (hour < 18) // We know that it is between 16 and 18

        {

            WriteLine("Good evening!");

        }

        else // We know it is 18 or above

        {

            WriteLine("Good night!");

        }

    }

}