Surely this is homework.
I am not giving you all detauils, just some hints.
First of all: Look in HtDP.
Your translator works for single words.
Let translate-sentence be the procedure for translating a list of words.
Following HtDP it can look like:
(define (translate-sentence sentence lexicon sprache)
(cond
((null? sentence) ...)
((else
(cons
(translate (car sentence) ...)
(translate-sentence (cdr sentence) ...)))))
There are many more ways to do the same.
If you are acquanted with procedure map, you could write something like:
(define (translate-sentence sentence lexicon sprache)
(define (translate-word word) (translate word lexicon spache))
(map ...))
Jos
-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of [email protected]
Sent: domingo, 25 de junio de 2017 14:24
To: Racket Users
Subject: [racket-users] I can translate a word but how can I translate a
setence with drrakket
Hello today I made a translator for drRakket cause its a task of my teacher.
I did it for one word but now I have to make it with a whole setence. I know I
have to work with cons somehow but I just dont get
how to make it. My teacher doesnt understand it himself (he uses a pdf which
gives all the tasks and wont give us solutuions) so you
guys are my only hope.
Here is my current code (Sorry for the german ( wort means word, lexikon is the
list with all the words in 3 langauges) and sprache
means language)
#lang racket
(define *lex*
'((cat gato katze)
(dog perro hund)
(eats come frisst)
(jumps salte springt)
(the el die)))
(define (translator wort lexikon sprache)
(cond ((null? lexikon) '(Wort wurde nicht gefunden))
((or (equal? wort (first (first lexikon)))
(equal? wort (first (rest (first lexikon))))
(equal? wort (first (rest (rest (first lexikon))))))
(cond
((equal? sprache 'english) (first (first lexikon)))
((equal? sprache 'spanisch) (first (rest (first lexikon))))
((equal? sprache 'deutsch) (first (rest (rest (first lexikon))))))
)
(else (translator wort (rest lexikon) sprache))
))
So (translator 'cat *lex* 'deutsch) will give the german word for cat which is
Katze.
But now I have to change the code that (translator '(the dog jumps) *lex*
'deutsch) will give me "die hund springt".
Can anyone help me? You are my last hope!
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