I have been spending a lot of time on trains recently and thought that I could utilise the time by doing a spot of programming.
I don't want to use a Notebook because of the size.
Has anyone tried writing code on a PDA?
Are the screens big enough?
Can you get C++ compilers and IDEs for them?

As you can probably tell I haven't done a huge amount of research into this yet.
I was hoping someone here already had some experience in this and could give me an opinion