Hello, Is this a good answer to exercise 57 of the Second Edition book.
1) (define-struct time-midnight (hour minutes seconds)) 2) Struct -> Struct.A programm which calculates the time with 12 'o clock at the evening as starting point.
Given ( 1:12.23) expected ( 1:12:23)
Given ( 14:00:34) expected ( 14:00:34)
(define (time-from-midnight ( time-midnight) x)
Regards,
Roelof
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