Simple Examples of Arrays in C#

//SIMPLE EXAMPLE OF ARRAYS IN C# 
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication3
{
    class Program
    {

       
        static void Main(string[] args)
        {
            int j = 1;
//declare j by 1
            for (int x = 0; x < 9; x++)
            {
                for (int i = x; i < 5; i++)
                {
                    if (i < 4)
                    {
                        Console.Write(" ");
                    }
                    else
                    {
                        for (int jj = 0; jj < j; jj++)
                        {
                            Console.Write("*");
                        }
                        j = j + 2;
                        Console.WriteLine();
                    }
                }
            }
            Console.ReadLine();      
        }
    }
}