By turns (I use the codes by turns)

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hi,

I have 2 program codes and first I try with the short then with the long and then with the short and so on.

How to say it?

I use the codes by turns.
I use the codes alternately.
I take turns at doing the codes

2

.
Just the first two, Attila:

I use the codes by turns.
I use the codes alternately.
.

3

Could you say what would happen with the meaning (whether it changes) if I use alternatively instead of alternately?

4

quote]if I use alternatively instead of alternately?
[/quote]

If you used these things, alternatively, that means you used them istead of some other things.

Art