Rock Paper Scissors v1.1

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

namespace RockPaperScissorApp
{
    class Program
    {
        static string userChoice = "";
        static string userChoiceInput;
        static string cpuChoice;
        static int gameCount = 0;
        static int winCount = 0;
        static int tieCount = 0;

        static void Main(string[] args)
        {
            //Loop to keep the game running
            bool playAgain = true;
            do
            {

                //Loop to see if user input equals Rock, Paper, or Scissors, accept any case
                bool inputCorrect = false;
                do
                {
                    Console.Clear();
                    Console.Write(@"Please enter ""Rock"", ""Paper"", or ""Scissors"" : ");
                    userChoiceInput = Console.ReadLine();
                    userChoice = userChoiceInput.First().ToString().ToUpper() + userChoiceInput.Substring(1).ToLower();

                    if ((userChoiceInput.Equals("Rock", StringComparison.OrdinalIgnoreCase)) ||
                    (userChoiceInput.Equals("Paper", StringComparison.OrdinalIgnoreCase)) ||
                    (userChoiceInput.Equals("Scissors", StringComparison.OrdinalIgnoreCase)))
                    {
                        inputCorrect = true;
                    }
                    else
                    {
                        Console.Clear();
                        Console.WriteLine("Input Invalid");
                    }
                } while (!inputCorrect);

                Console.WriteLine($"You chose {userChoice}");

                //Set Rock, Paper, Scissors array
                string[] cpuChoose = new string[] { "Rock", "Paper", "Scissors" };

                //Get random cpu choice of rock, paper, or scissors
                Random rnd = new Random();
                int cpuIndex = rnd.Next(0, 3);
                cpuChoice = cpuChoose[cpuIndex];

                Play();
                DisplayStats();

                Console.WriteLine("");
                Console.WriteLine(@"Play Again? Enter ""Y"" or ""N"" ");
                string playAgainInput = Console.ReadLine();

                if(playAgainInput == "N" || playAgainInput =="n")
                {
                    playAgain = false;
                }

            } while (playAgain);
        }

        //Play Round, Display Winner, Display Stats
        static void Play()
        {
            Console.Clear();
            Console.WriteLine("User chooses {0}", userChoice);
            Console.WriteLine("Computer chooses {0}", cpuChoice);

            if (userChoice == cpuChoice)
            {
                Console.WriteLine("Tie");
                tieCount++;
            }
            else
            {
                if (userChoice == "Rock" && cpuChoice == "Scissors")
                {
                    Console.WriteLine("You Win!");
                    winCount++;
                }
                if (userChoice == "Rock" && cpuChoice == "Paper")
                {
                    Console.WriteLine("You Lose");
                }
                if (userChoice == "Paper" && cpuChoice == "Rock")
                {
                    Console.WriteLine("You Win!");
                    winCount++;
                }
                if (userChoice == "Paper" && cpuChoice == "Scissors")
                {
                    Console.WriteLine("You Lose");
                }
                if (userChoice == "Scissors" && cpuChoice == "Paper")
                {
                    Console.WriteLine("You Win!");
                    winCount++;
                }
                if (userChoice == "Scissors" && cpuChoice == "Rock")
                {
                    Console.WriteLine("You Lose");
                }
            }
            gameCount++;
        }

        //Display Stats to user, catch divide by zero
        static void DisplayStats()
        {
            Console.WriteLine("\nGame Count: {0}", gameCount);
            Console.WriteLine("Win Count: {0}", winCount);
            Console.WriteLine("Tie Count: {0}", tieCount);

            try
            {
                double gameCountDouble = (double)gameCount;
                double winCountDouble = (double)winCount;
                double winPercent = winCountDouble / ( gameCountDouble - tieCount);

                Console.WriteLine("Win Count: " + winPercent.ToString("P"));
            }
            catch
            {
                Console.WriteLine("N/A");
            }
        }
    }
}