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  1. ; leap year
  2.  
  3. (define (leap? n)
  4.   (if (positive? (modulo n 4)) #f
  5.     (if (positive? (modulo n 100)) #t
  6.       (if (positive? (modulo n 400)) #f
  7.         #t))))
  8.  
  9. (display (leap? 2018)) (newline)
  10. (display (leap? 2016)) (newline)
  11. (display (leap? 2000)) (newline)
  12. (display (leap? 2100)) (newline)
Success #stdin #stdout 0s 50224KB
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Standard input is empty
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#f
#t
#t
#f
https://ideone.com/54HPvM
language:
Scheme (guile 2.2.4)
created:
5 years ago
visibility:
public

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