How to make an array with size received as arguments in a function in LISP? [duplicate]

Question

This question already has an answer here:

• How to modify this “make-matrix” function? 1 answer

I'm trying to create a function that receives a number of lines and columns and makes an array out of it. This is what I did

(defun create-table (lines columns)
     (make-array '(lines columns)))

I thought this is how you make a multidimensional array. But as I call the function create-table for example (create-table 2 2) this error is given

MAKE-ARRAY: dimension LINES is not of type `(INTEGER 0 (,ARRAY-DIMENSION-LIMIT))

I don't understand, how could it not be an integer? Should I make a cast?

Answer 1

What do you think '(lines columns) evaluates to?

Hint: you can create lists with the function LIST.

Answer 2

There is an error in your function

Try like this

(defun create-table (lines columns)
 (make-array `(,lines ,columns)))