Array Indexing

Arrays store fixed-size ordered values, and an index selects one position.

ArrayIndexing.cs

using System;

class Program
{
    static void Main()
    {
        int index = ;
        string[] colors = { "red", "green", "blue" };
        string selected = colors[index];
        int count = colors.Length;

        Console.WriteLine($"index={index}");
        Console.WriteLine($"selected={selected}");
        Console.WriteLine($"count={count}");
    }
}

using System;

class Program
{
    static void Main()
    {
        int index = ;
        string[] colors = { "red", "green", "blue" };
        string selected = colors[index];
        int count = colors.Length;

        Console.WriteLine($"index={index}");
        Console.WriteLine($"selected={selected}");
        Console.WriteLine($"count={count}");
    }
}

using System;

class Program
{
    static void Main()
    {
        int index = ;
        string[] colors = { "red", "green", "blue" };
        string selected = colors[index];
        int count = colors.Length;

        Console.WriteLine($"index={index}");
        Console.WriteLine($"selected={selected}");
        Console.WriteLine($"count={count}");
    }
}

array index An array index is a zero-based number that selects one array element.