Scratch

Stack...? Already done. I made one for my Ackermann function calculator: http://scratch.mit.edu/forums/viewtopic.php?id=99489
(not trying to advertise)
Also, the "Enter" command when pushing items doesn't work. At least it didn't work for me.

Hi Molybdenum,
Thanks again for looking at my project. I've just checked it and it does seem to work. I've tried to clarify the instructions and I've re-uploaded it.
I realise that this is quite a simple thing, that others will have done. But I am a teacher and I'm trying to get a few things together to use for teaching programming ideas using Scratch.

The Maths of Ackermann's function looks way too hard for me!

So basically, in my project, you can push a series of numbers, words etc and when you are done, you press "enter" (or click the blue tick) this should then let you choose whether to push some more or pop some.
Seems to be working ....
mark

Molybdenum wrote:

I know how a stack works.

Oh, I though you meant to type in "Enter" (the word enter). I never though it meant to enter a blank string.

Sorry if I came across as patronising. I can tell you know your stuff!
I am really pleased you commented - it's very helpful get feedback!
cheers,
mark