using System;

​

namespace steppen_rec

{

    public class Program

    {

        public double Steppen(double a, int n)

        {

            if (n == 0)

            {

                return 1;

            }

            if (n > 0) return a * Steppen(a, n - 1);

            return 1 / (a * Steppen(a, -n - 1));

        }

        public void Main(string[] args)

        {

            Console.WriteLine("a^n");

            Console.WriteLine("=================");

            Console.Write("a = "); double a = double.Parse(Console.ReadLine());

            Console.Write("n = "); int n = int.Parse(Console.ReadLine());

            if (n >= 0) Console.WriteLine(a + "^" + n + " = " + Steppen(a, n));

            else Console.WriteLine(a + "^(" + n + ") = " + Steppen(a, n));

        }

    }

}

​