Printing days in a week in three letter format in C#
In some systems it may be useful to display the day of the week in a three-letter form.
Here we see a simple program that prints out the days of the week in three-letter format. 

using System;

namespace forgetCode
{
    class Program
    {
        static void Main(string[] args)
        {
            DateTime now = DateTime.Today;
            for (int i = 0; i < 7; i++)
            {
                Console.WriteLine(now.ToString("ddd"));
                now = now.AddDays(1);
            }          
        }

    }
}


Output:
Sun
Mon
Tue
Wed
Thu
Fri
Sat

..