Re: need help with numberp and memberp

davidciccarello@[EMAIL PROTECTED]
 wrote:
> numberp :v iffalse [messagebox [error] [you need to use number(s) are
> your first digits]]
> numberp 1>:v>13 iftrue [messagebox [error] [your first 2 inputs must
> be numbers between 1 and 13]]

You forgot the "test"-instruction before numberp.
Also 1>:v>13 is probably not recognized by Logo,
except it's a very sly one. ;-)
You can write
	and (1 > :v) (:v > 13)
instead.
But this will only output a word, either "true or "false,
so it never will be a number, most possibly.

But you can also rewrite it using the "if" or "ifelse"
control structures,
which is a bit more modern than "test"+"iftrue"+"iffalse".

Cheers,
Andreas