AutoLisp Autocad; "; error: no function definition: [DEFINE "

Question

Hi my Dearest Friends..

I get this message "; error: no function definition: [DEFINE " when I run the below AutoLisp code in AutoCad, Could please somebody show me what is expecting Autocad?, what does it expect [ Define..?.. how can I do it...

This is the code..

 defun C:DDs(       [define program] 
    (setq a (getstring "Qty? "))
    (setq b (getstring "Lot? "))

        (if (= a b)
           (progn
             (princ "HoHoH ")
           );end progn
           (progn
             (princ "Hihihii")
           );end progn
        );end if

)

Thanks a lot, all the best to all of you...

I tryed to rid of the error message when i run mi autolisp app

score 1 · Answer 1 · answered Mar 23 '23 at 13:48

There are a couple of issues with your code:

You are missing an opening parenthesis before the defun expression:
```
(defun c:DDs
^---------------------- Here
```
[define program] is not valid syntax in AutoLISP - instead, the defun expression should be supplied with a list of arguments and/or local variables, e.g.:
```
(defun c:DDs ( / a b )
    ...
)
```

AutoLisp Autocad; "; error: no function definition: [DEFINE "

1 Answers1