why is the warning sign popping out? in lisp programming

70 Views Asked by At

Why is this "Warning: Free reference to undeclared variable ARAD assumed special." popping out?

(defstruct Place()
  (pathCost  10)
  (childName 'none)
)

(setf Arad(make-Place :childName 'Zerind))

(describe Arad)
0

There are 0 best solutions below