// C# 輸出6*6 的矩形

        static void Main(string[] args)
        {
            // C# 輸出6*6 的矩形
            for (int i = 0; i < 6; i++)
            {
                for (int j = 0; j < 6; j++)
                {
                    if (i == 0 || i == 5)
                    {
                        Console.Write(" *");
                    }
                    else
                    {
                        if (j == 0 || j == 5)
                        {
                            Console.Write(" *");
                        }else
                        {
                            Console.Write("  ");
                        }
                    }
                }
                Console.Write("\r\n");
            }
            Console.ReadLine();
        }