Addition of Three Numbers in LISP

Here is a sample program that will ask the user to give three numbers and then the program will compute the sum of the two numbers and display the results on the screen using LISP as our programming language.

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Sample Program Output

Program Listing

add.lisp

(defun Addition()

(terpri)

(princ "Additon of Three Numbers in LISP ")

(terpri)

(terpri)

(princ "Enter First Value  : ")

(setq a (read))

(princ "Enter Second Value : ")

(setq b (read))

(princ "Enter Third Value  : ")

(setq c (read))

(terpri)

(setq sum  (+ a b c ))

(princ "The total sum is  ")

(write sum))

(Addition)