Tumbleweed:
Hey, I said it would be obvious to the experts here. If no one can ask simple/ignorant/uninformed questions here, then they might as well shut down the whole forum.
By the way, I had figured it out on my own when the output wasn't what I expected.
And there is little reason to feel that you are being put down or singled out for not reading the documentation. The problem is that many of the problems that newcomers have with their early sketch attempts revolve around arduino written functions that are unique to arduio, so you will have little luck looking for help at more traditional C/C++ manuals and references. The following link ( Arduino - Home )is the FIRST place you should look at if a function is not working as you think it should. Note also that in the bottom right of that page is a link that contains the documentation for many more of the arduino provided library functions.
When I first started with an arduino board and trying to learn C, I found the most useful way for me to learn was to study the many many example sketches that are included in the IDE under files options. More formal documentation works better for some, but finding what works best for you is part of the learning journey your on.
Good luck
Lefty