Solved Re: Translating a list of numbers

On Jan 20, 5:24 pm, Cesar Rabak <csra...@xxxxxxxxxxxx> wrote:
Slobodan Blazeski escreveu:> Hi group

I'm common lisp programmer that started learning prolog this thursday.
I'm using book learn prolog now, nice book but lacks solutions for
selfstudy, and everything was going smooth untill I got stuck at
Exercise 4.2. I really can not think of any way how to make the
translation and that frustrates me. Any help for this task or show me
something simigliar like how to use translating fact into unification
will be highly appreciated?

thanks
Slobodan

Exercise 4.2 Suppose we are given a knowledge base with the following
facts:

[snipped]

Since you're learning:

Hint: to answer this question, first ask yourself 'How do I translate
the empty list of
number words?'.

What's your answer to this question?

That's the base case. For non-empty lists, first
translate the head of
the list, then use recursion to translate the tail.

Then proceed with this suggestion.
Solved, thanks for your help.

tran(eins,one).
tran(zwei,two).
tran(drei,three).
tran(vier,four).
tran(fuenf,five).
tran(sechs,six).
tran(sieben,seven).
tran(acht,eight).
tran(neun,nine).

listtran([],[]).
listtran([Hg|Tg],[He|Te]) :-
tran(Hg,He),
listtran(Tg,Te).

cheers
Slobodan
.

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