Meтод , switch , odd/even

using System;

namespace ConsoleApp7
{
    class Program
    {
        static string OddEven(int a)
        {
            string s = "";
            switch (a)
            {
                case 0: case 2: case 4: case 6: case 8:
                    s = "even";
                    break;
                case 1: case 3: case 5: case 7: case 9:
                    s = "odd";
                    break;
            }
            return s;
        }

        static string Last(int a)
        {
            string s = "";
            switch (a)
            {
                case 0:
                    s = "zero";
                    break;
                case 1:
                    s = "one";
                    break;
                case 2:
                    s = "two";
                    break;
                case 3:
                    s = "three";
                    break;
                case 4:
                    s = "four";
                    break;
                case 5:
                    s = "five";
                    break;
                case 6:
                    s = "six";
                    break;
                case 7:
                    s = "seven";
                    break;
                case 8:
                    s = "eight";
                    break;
                case 9:
                    s = "nine";
                    break;
            }
            return s;
        }
        static void Main(string[] args)
        {
            int a = int.Parse(Console.ReadLine());
            a = a % 10;
            Console.WriteLine(Last(a));
            Console.WriteLine(OddEven(a));
        }
    }
}