[plt-scheme] solution for exercise 5.1.3
is this correct?
(define (unity a b c)
(+ (* a 100) (* b 10) c))
(define (check-guess3 a b c target)
(cond
[(< (unity a b c) target) 'TooSmall]
[(= (unity a b c) target) 'Perfect]
[(> (unity a b c) target) 'TooLarge]))
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