Identifiers and Keywords

Identifiers are used for variable, task, function, and subroutine names. The first character of an identifier must be an upper or lower case letter or the underscore ('_'). Remaining characters may be letters, numbers, and underscores.

A number of tokens are reserved for use in the NBC language itself. These are called keywords and may not be used as identifiers. A complete list of keywords appears below:

add	sub	neg	mul
div	mod	and	or
xor	not	cmp	tst
index	replace	arrsize	arrbuild
arrsubset	arrinit	mov	set
flatten	unflatten	numtostr	strtonum
strcat	strsubset	strtoarr	arrtostr
jmp	brcmp	brtst	syscall
stop	exit	exitto	acquire
release	subcall	subret	setin
setout	getin	getout	wait
gettick	thread	endt	subroutine
follows	precedes	segment	ends
typedef	struct	db	byte
sbyte	ubyte	dw	word
sword	uword	dd	dword
sdword	udword	long	slong
ulong	void	mutex	waitv
call	return	abs	sign
strindex	strreplace	strlen	shl
shr	sizeof	compchk	compif
compelse	compend		isconst
asl	asr	lsl	lsr
rotl	rotr	start	stopthread
priority	cmnt	fmtnum	compchktype
float	wait2	sqrt	waitv
arrop	acos	asin	atan
ceil	exp	floor	tan
tanh	cos	cosh	log
log10	sin	sinh	trunc
frac	atan2	pow	muldiv
acosd	asind	atand	tand
tanhd	cosd	coshd	sind
sinhd	atan2d	addrof