Array - Two Dimensional concept using C#

using System;

public class exam

 {

    public static void Main()

        {

            int i, j;

            string[,] Books = new string[3, 3];

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

            {

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

                {

                    Console.Write("\nEnter Book Name for {0}. Row and {1}. column:\t", i + 1, j + 1);

                    Books[i, j] = Console.ReadLine();

                }

         }

            Console.WriteLine("\n\n=========================");

            Console.WriteLine("All the element of Books array is:\n\n");



            Console.Write("\t1\t2\t3\n\n");



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

            {

                Console.Write("{0}.\t", i + 1);



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

                {

                    Console.Write("{0}\t", Books[i, j]);

                }

                Console.Write("\n");

            }

            Console.WriteLine("\n\n=========================");

          }

    }