Language Basics C# Book

The following code uses the indexer to access each week day.
using System;
class Week
{
string[] days = new string[] { "Monday", "Tuesday", "Wednesday",
"Thursday", "Friday", "Saturday", "Sunday" };
public string this[int i]
{
get
{
return days[i];
}
set
{
days[i] = value;
}
}
}
class Program
{
static void Main(string[] args)
{
Week w = new Week();
Console.WriteLine(w[2]);
}
}
The output:
Wednesday
The indexer can have the following modifiers:
static
public
internal
private
protected
new
virtual
abstract
override
sealed
unsafe
extern