PineTree

            // Pine Tree
            Console.WriteLine("Pine Tree");
            int size = 80;
            for (i = 0; i < size; i++)
            {
                if (i % 2 == 0) continue;
                for (int k = (size - i) / 2; k > 0; k--)
                {
                    Console.Write(" ");
                }
                for (int j = 0; j < i; j++)
                {
                    Console.Write("*");
                }
                Console.WriteLine();
            }