You never assign the read input to your variables:
(defun func ()
(print "Enter first integer")
(finish-output)
(let ((a (read)))
(print "Enter second integer")
(finish-output)
(let ((b (read)))
(print (+ a b)))))
Question
I am a new lisp user. I have been trying to figure out how to use the lisp read command for about an hour by googling and looking for examples. I have been unsuccessful, and am finally throwing in the towel.
Can someone give me a very simple example of a lisp function that will accept 2 inputs, and add them?
My best attempt:
(defun func ()
(print "Enter first integer")
(read)
(print "Enter second integer")
(read)
(print (+ A B))
)
I have tried experimenting with (read A)
or with a prefix to read (format t “~A” string)
with no luck. All of the information on the internet that I have been looking for is extremely complicated, and I cannot make heads nor tails of it. Should it really be this hard? I may just be too familiar with bash/ksh/csh/sh...
La solution
You never assign the read input to your variables:
(defun func ()
(print "Enter first integer")
(finish-output)
(let ((a (read)))
(print "Enter second integer")
(finish-output)
(let ((b (read)))
(print (+ a b)))))