using System;

​

namespace Week3b_1

{

    public class Program

    {

        public static void Main(string[] args)

        {

            double ave=0, sum=0;

            int num, N, i, j;

            Console.WriteLine("Input how many numbers in the Array: ");

            num = Convert.ToInt32(Console.ReadLine());

            int[] arrayA = new int[num];

            int[] arrayB = new int[num];

            Console.WriteLine("Input elements of Array A: ");

            for(i = 0; i < num; i++)

            {

                arrayA[i] = Convert.ToInt32(Console.ReadLine());

                arrayB[i] = 0;

                sum += arrayA[i];

            }

            Console.WriteLine("\nInput any integer: ");

            N = Convert.ToInt32(Console.ReadLine());

            for(i = 0; i < num; i++)

            {

                if(arrayA[i] == N)

                {

                    Console.WriteLine("\nA: " + N + " is an element of the array, located at index " + i + ".");

                    break;

                }

            }

                if(i == num)

                {

                    Console.WriteLine(num + " is not an element of the array.");

                }

            ave = sum/num;

            ave = Math.Round(ave,2);

            Console.WriteLine("B: The average of the elements in the array is: " + ave);

            Console.WriteLine("C: The copied elements of array B from array A: ");

            for(i = 0; i < num; i++)

            {

                arrayB[i] = arrayA[i];

                Console.WriteLine(arrayB[i]);

            }

            j = num - 1;

            Console.WriteLine("D: The reverse of array B:");

            for(i = 0; i < num; i++)

            {

                arrayB[i] = arrayA[j];

                Console.WriteLine(arrayB[i]);

                j--;

            }

        }

    }

}