foreach

#define GET_NUMBER_ELEMENTS(T)  (sizeof(T) / sizeof(*T))
#define FOREACH(item, array) \
        for(int keep = 1, \
                count = 0,\
                size = GET_NUMBER_ELEMENTS(array); \
            keep && count != size; \
            keep = !keep, count++) \
                for(item = (array) + count; keep; keep = !keep)