I'm learning how to use the Racket program, I'm still at the prologue of the Second edition of how to design programs. When I type in:
(* (image-width ) (image-height )) or (circle 10 "solid" "red") or (rectangle 30 20 "outline" "blue") I get the error message: image-width: this function is not defined circle: this function is not defined rectangle: this function is not defined I don't know what to do, Thanks in advance, Geoff. ____________________ Racket Users list: http://lists.racket-lang.org/users
