using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Pick a number 1-10");

        string input = Console.ReadLine();

        int size = Convert.ToInt32(input);

        int n = (size + size) /2;

         for (int a = 0;a < n -1 ; a++)

         {

             for(int e = size; e > a - (size/2 + 1); e--)

             {

                Console.Write(" ");

             }  

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

             {

                if( i == 0 || i == a )

                {

                    Console.Write(" .");

                }    

                else

                {

                    Console.Write("  ");

                }            

             }

​

             Console.WriteLine(" ");

         }

         for (int a = n - 1; a >= 0 ; a--)

         {

             for(int e = size; e > a - (size/2 + +1); e--)

             {

                    Console.Write(" ");

             }  

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

             {

                if( i == 0 || i == a )

                {

                     Console.Write(" .");

                }

                else

                {

                     Console.WriteLine("  ");

                }

            }

         }

    }

}

​

​

/*

          . 

         . . 

        .   . 

       .     . 

      .        . 

     .          . 

    .            . 

   .               . 

  . . . . . . . .   . 

 . . . . . . . . .   . 

. .  .  . .  . .  .  .  .   .

​

​

​

*/

​

​

​

​