Different int sizes on my computer and Arduino

Question

Im working on a sparetime project, making some server code to an Arduino Duemilanove, but before I test this code on the controller I am testing it on my own machine (An OS X ba

Answer 1

The C standard defines an int as being a signed type large enough to at least hold all integers between -32768 and 32767 - implementations are free to choose larger types, and any modern 32-bit system will choose a 32-bit integer. However, as you've seen, some embedded platforms still use 16-bit ints. I would recommend using uint16_t or uint32_t if your arduino compiler supports it; if not, use preprocessor macros to typedef those types yourself.