int i = 1;

            Console.WriteLine("while-Schleife");

            while(i < 11)
            {
                Console.WriteLine(11-i);
                i++;
            }


            i = 0;

            Console.WriteLine("do-while-Schleife");

            i = 10;

            do
            {
                Console.WriteLine(i);
                i--;
            } while (i > 0);


            Console.WriteLine("for-Schleife");

            for (i = 10; i > 0; i--)
            {
                Console.WriteLine(i);
            }

            Console.ReadLine();