Did you follow the instructions in the part labeled "2 Set..."? You need to put "#lang slideshow" at the top of your definitions window (replacing any #lang line that might already be there), and you need to press "Run" after doing that.
On Sat, Jun 8, 2013 at 10:26 PM, Steve Lett <steve.lett...@gmail.com> wrote: > Hi > I am a beginner programmer and just came across Racket this week when I was > on the Coursera website. I found the course called Intro to Systematic > Program Design. I am trying to use Stephen Bloch's Picturing Programs. But > my first attempt was using Quick-An Introduction to Racket with Pictures. > Typing 5 I got 5. Typing "art gallery" I got "art gallery". But when I typed > (circle 10) I got an error message "circle: this function is not defined". > > If I need a library there is a problem. My only internet conection is on the > Android platform on a Galaxy Tab. So I have downloaded the DrRacket software > and transferred it to my Windows Vista Laptop. I also have an XP desktop if > I need it. > > So how can I get (circle 10) to work? > > Thank you for being there! It really means alot! Steve Lett > > > ____________________ > Racket Users list: > http://lists.racket-lang.org/users > ____________________ Racket Users list: http://lists.racket-lang.org/users
