Showing posts with label Factorials in LISP. Show all posts
Showing posts with label Factorials in LISP. Show all posts

Monday, August 19, 2019

Factorials in LISP

A simple program that I wrote using LISP to ask the user to give a number and then the program will compute the factorial value of the given number.

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Sample Program Output


Program Listing

factorial.lisp

(setf fact 1)
(defun facto(n)
    ( loop for x from 2 to n
           do(setq fact (* x fact))
           )
    (write fact)
    (princ ".")
    )

(terpri)
(princ "Factorial a Number in LISP ")
(terpri)
(terpri)
(princ "Created By Mr. Jake R. Pomperada")
(terpri)
(terpri)
(princ "Give a Number : ")
(setq a (read))
(terpri)
(princ "The factorial value is ")
(facto  a)