Loops

The ++ denotes when i is incremented in relation to evaluating it’s value for the expression.

++i : The value of i is incremented before we actually retrieve and use it.

i++ : The value of i is incremented after we have already retrieved and used it.

In a for loop, it is slightly more efficient to use ++i in terms of assembly instructions (1-2 orders less), because the flow operates the same either way:

1. test the condition

2. if it is false, terminate

3. if it is true, execute the body

4. execute the incrementation step

This means that “++i” should be used as the default for all incrementation operations (loop or otherwise) unless there is a specific need to increment -after- evaluation.