using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace LastDigitOfNumber
{
    class LastDigitOfNumber
    {
        static void Main()
        {
            Console.WriteLine("Please enter a number:");
            int number = int.Parse(Console.ReadLine());
            string s = GetLastDigitOfANumber(number);

            Console.WriteLine(s);
        }
        static string GetLastDigitOfANumber(int inputNum)
        {
            int lastDigit = inputNum % 10;
            string last = "";
            switch(lastDigit)
            {
                case 1:
                    last = "one";
                    break;
                case 2:
                    last = "two";
                    break;
                case 3:
                    last = "three";
                    break;
                case 4:
                    last = "four";
                    break;
                case 5:
                    last = "five";
                    break;
                case 6:
                    last = "six";
                    break;
                case 7:
                    last = "seven";
                    break;
                case 8:
                    last = "eight";
                    break;
                case 9:
                    last = "nine";
                    break;

            }
            return last;
        }
    }
}