Question in Scheme

How do I set a timer to run for 10 seconds in Scheme before executing the next command.

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What variant of Scheme are you using?  I do not believe that there is a standard method of creating threads/timers in scheme, and it will instead be variant-specific.

(Petite) Chez Scheme includes support for threads.  With the included SWL library, you can make a simple timer:
Here is the main website:

Here is some documentation specific to threading. <-- Refer to for creating a thread <-- Refer to for sleeping a thread

Sample code:

(define (timer) (thread-sleep 10000) (display "Hello World"))

(fork-thread timer)
(display "Main Thread")

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