using System;

public class Program

{

    public static void Main()

    {

        int i;

        int m;

        Console.WriteLine("pls enter a value for m: ");

        m = int.Parse(Console.ReadLine());

        Char [] arr = new Char[m];

        Char [] arr2 = new Char[m];

        Console.WriteLine("pls enter the kode: ");

        for ( i = 0; i < arr.Length; i++)

        {

            arr [i] = (char) Console.Read();

        }

        Console.WriteLine();

        for ( i = 0; i < arr.Length; i++)

        {

            Console.Write(" " + arr [i]);

        }

        Console.WriteLine();

        for ( i = 0; i < arr.Length; i = i + 2)

        {

            if (arr [i] != ' ' )

            {

                arr2[i] = (char) (arr[i] + 1);

            }

        }

        for (i = 1; i < arr.Length; i = i + 2)

        {

            if (arr [i] != ' ' )

            {

                arr2 [i] = (char) (arr[i] - 1);

            }

        }

        for ( i = 0; i < arr.Length; i = i ++)

        {

            Console.Write(" " + arr2 [i]);

        }

        Console.WriteLine();

    }

}

/*

pls enter a value for m: 

7

pls enter the kode:

Run-time exception (line 16): Console.Read is not supported.

​

Stack Trace:

​

[System.NotImplementedException: Console.Read is not supported.]

   at DotNetFiddle.Infrastructure.ConsoleStringReader.Read()

   at System.IO.TextReader.SyncTextReader.Read()

   at System.Console.Read()

   at Program.Main() :line 16

   /////////////

   pls enter a value for m: 

10

pls enter the kode:

Run-time exception (line 16): Console.Read is not supported.

​

Stack Trace:

​

[System.NotImplementedException: Console.Read is not supported.]

   at DotNetFiddle.Infrastructure.ConsoleStringReader.Read()

   at System.IO.TextReader.SyncTextReader.Read()

   at System.Console.Read()

   at Program.Main() :line 16

   */