using System;

public class Program

{

    Random rnd = new Random();

    int[, ,] array3Da = new int[3, 3, 3];

    public void Main()

    {

        for (int i = 0; i < 3; i++)

        {

            for (int j = 0; j < 3; j++)

            {

                for (int k = 0; k < 3; k++)

                {

                    array3Da[i, j, k] = rnd.Next(1, 10);

                    Console.WriteLine("[{0}, {1}, {2}] = {3}", i, j, k, array3Da[i, j, k]);

                }

            }

        }

        changeNumber(2);

    }

    public void changeNumber(int n)

    {

        Console.WriteLine("Cambiando números...");

        for (int i = 0; i < 3; i++)

        {

            for (int j = 0; j < 3; j++)

            {

                for (int k = 0; k < 3; k++)

                {

                    array3Da[i, j, k] = n;

                    Console.WriteLine("[{0}, {1}, {2}] = {3}", i, j, k, array3Da[i, j, k]);

                }

            }

        }

    }

}