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I want program take 5 numbers of list from users then add them , in scheme language (define (sum lst) ( if(null? lst) 0 (+ (car lst) ( sum(cdr lst)))) ) (dotimes (i 5) (display " pls enter number = ") (define val (read)) (display (sum lst)) (newline) ) but my code has error

I want program take 5 numbers of list from users then add them , in scheme language (define (sum lst) ( if(null? lst) 0 (+ (car lst) ( sum(cdr lst)))) ) (dotimes (i 5) (display " pls enter number = ") (define val (read)) (display (sum lst)) (newline) ) but my code has error

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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I want program take 5 numbers of list from users then add them , in scheme language

(define (sum lst)
(
if(null? lst)
0
(+ (car lst) ( sum(cdr lst))))
)
(dotimes (i 5)
(display " pls enter number = ")
(define val (read))
(display (sum lst))
(newline)
)

but my code has error

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