Comment by defrost

> "How do I get the third element of this array" should be `arr[2]`

Ask a carpenter.

To get to the third pigeonhole in a racked series of one foot per pigeonhole unit you literally offset two feet from the origin.

In C (of course), arr[2] works as well as does 2[arr] as both are literally just syntactic sugar for arr+2

ie. The third pigeon hole begins after passing two whole pigeonholes.