NUM_ELEMENTS
#define NUM_ELEMENTS(a) (sizeof(a) / sizeof((a)[0]))
#define NUM_ELEMENTS(a) (sizeof(a) / sizeof((a)[0]))
#define NUM_ELEMENTS(a) (sizeof(a) / sizeof((a)[0]))
#define NUM_ELEMENTS(a) (sizeof(a) / sizeof((a)[0]))
#define NUM_ELEMENTS(a) (sizeof(a) / sizeof((a)[0]))
#define NUM_ELEMENTS(a) (sizeof(a) / sizeof((a)[0]))