; error: too few arguments 求助!!!

zhanzhe

各位大哥，我的Lisp程序總是出現這樣的錯誤：(程序快捷鍵是n)

Unknown command "N".  Press F1 for help.
Unknown command "N".  Press F1 for help.
Unknown command "N".  Press F1 for help.
; error: too few arguments

Command: n nil

,但實際上我的程序運行得很好啊，也沒有出現什麼錯誤啊,Why? 

Thanks!

Andyhon

ex.

too few arguments
(distance pt1 pt2)   ; ok
(distance pt1)       ; too few arguments

(polar pt vv dd)     ; ok
(polar pt vv )       ; too few arguments
(polar pt)           ; too few arguments