RosettaCodeData/Task/Multiplication-tables/Common-Lisp/multiplication-tables.lisp

17 lines
485 B
Common Lisp

(do ((m 0 (if (= 12 m) 0 (1+ m)))
(n 0 (if (= 12 m) (1+ n) n)))
((= n 13))
(if (zerop n)
(case m
(0 (format t " *|"))
(12 (format t " 12~&---+------------------------------------------------~&"))
(otherwise
(format t "~4,D" m)))
(case m
(0 (format t "~3,D|" n))
(12 (format t "~4,D~&" (* n m)))
(otherwise
(if (>= m n)
(format t "~4,D" (* m n))
(format t " "))))))