30.01 English Name Of The Last Digit

using System;
class Program
{
    static void Main()
    {
        long num = long.Parse(Console.ReadLine());
        GetLastDigit(num);
    }
    static void GetLastDigit(long num)
    {
        long lastNum = Math.Abs(num % 10);
        switch (lastNum)
        {
            case 0: Console.WriteLine("zero"); break;
            case 1: Console.WriteLine("one"); break;
            case 2: Console.WriteLine("two"); break;
            case 3: Console.WriteLine("three"); break;
            case 4: Console.WriteLine("four"); break;
            case 5: Console.WriteLine("five"); break;
            case 6: Console.WriteLine("six"); break;
            case 7: Console.WriteLine("seven"); break;
            case 8: Console.WriteLine("eight"); break;
            case 9: Console.WriteLine("nine"); break;
        }
    }
}