static void Main(string[] args)
        {
            Console.WriteLine("Welcome to Tic Tac Toe Game");
            TicTacToe tic = new TicTacToe();

            // To create a new board
            char [] board = tic.CreateBoard();
            // To show board
            tic.ShowBoard(board);
            tic.Toss();
            // To choose a letter by a user
            char userLetter     = tic.ChooseLetter();
            char computerLetter = (userLetter == 'X') ? 'O' : 'X';
            // To move desired location
            int userMove = tic.getUserMove(board);

            tic.makeMove(board, userMove, userLetter);
            tic.ShowBoard(board);
            //Computer Move
            int computerMove = tic.getComputerMove(board, computerLetter, userLetter);

            Console.WriteLine("Check if Won: " + tic.isWinner(board, userLetter));
        }