Example - Two dimensional array

using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Two_dimensional_array
{
    class TwoDimentionalArray
    {
        static void Main(string[] args)
        {
            int[,] numberApartments =  {{400, 401, 402, 403},
                                        {300, 301, 302, 303},
                                        {200, 201, 202, 203},
                                        {100, 101, 102, 103}};
            int floor, apartments;
            string inputString;

            Console.Write("Enter the floor on which you live: ");
            inputString = Console.ReadLine();
            floor = Convert.ToInt32(inputString);
            Console.Write("Enter the number of apartament you want to be checked: ");
            inputString = Console.ReadLine();
            apartments = Convert.ToInt32(inputString);
            Console.WriteLine("The apartment when you think that is your husband is \n{0}", numberApartments[floor,apartments]);
        }
    }
}