C# program to print a matrix table from 1 to 20

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace ConsoleApplication1

{

    class Program

    {

        static void Main(string[] args)

        {

            int[,] tab = new int[20, 10];

            int i, j;

            for (i = 0; i < 20; i++)

            {

                for (j = 0; j < 10; j++)

                {

                    tab[i, j] = (i + 1) * (j + 1);

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

                }

                Console.WriteLine();

            }

            Console.ReadLine();

        }

    }

}