Solution To Reddit Daily Programmer #239 - A Game Of Threes

gameOfThrees.cs

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

namespace GameOfThrees
{
    class Program
    {
        static void Main(string[] args)
        {
            string strNumber;
            int intNumber;

            //Get the number.
            Console.Write("Enter a number: ");
            strNumber = Console.ReadLine();

            //Try to parse that to an integer.
            try
            {
                intNumber = Int32.Parse(strNumber);

                //Now loop through.
                while (intNumber != 1)
                {
                    //Figure out what to do based on the number.
                    if (intNumber % 3 == 0)
                    {
                        Console.WriteLine("{0}  0", intNumber);
                        intNumber = intNumber / 3;
                    }
                    else if ((intNumber - 1) % 3 == 0)
                    {
                        Console.WriteLine("{0}  -1", intNumber);
                        intNumber = intNumber - 1;
                    }
                    else if ((intNumber + 1) % 3 == 0)
                    {
                        Console.WriteLine("{0}  +1", intNumber);
                        intNumber = intNumber + 1;
                    }
                }

                Console.WriteLine("{0}", intNumber);
            }
            catch
            {
                Console.WriteLine("Error! '{0}' isn't a number!", strNumber);

            }
        }
    }
}