public static bool CreateRectangle(string widthString)
        {
            int width = Int32.Parse(widthString);

            for(int y = 0; y < width; y++)
            {
                for (int x = 0; x < width; x++)
                {
                    if (y == width - 1)
                        Console.Write("*");
                    else if (x == 0 && y != width - 1)
                        Console.Write("*");
                    else if (x == y && y != width - 1)
                        Console.Write("*");
                    else if (x != y && x != 0 && y != width - 1)
                        Console.Write(" ");
                }
                Console.WriteLine();
            }
            return true;
        }