Hello,

Apologies for this rather elementary question.�� I'm learning prolog via Michael Covington's Prolog Programming in Depth and working through the examples using Ciao 1.14.2.

(The book, and source files can be found at:�� http://www.covingtoninnovations.com/books.html).

I'm having difficulty getting the car.pl example to work (pg 54-60).�� He uses the following to parse a single character input (Y or N):

get_yes_or_no(Result) :- get(Char),�� % read a character.
�� get0(_),�� % consume the Return after it.
�� interpret(Char,Result),
�� !.�� % cut -- see text

Apparently, Ciao has neither a a get/1 nor a get0/1 predicate.�� As far as I can tell, the original get0/1 predicate parses a return character,
unifies it with an anonymous variable (resulting in yes), and then procedes to the predicate interpret().

I changed get(Char) to get_char(Char), and get0 to get_code(_), but this puts me in an endless loop that calls get_yes_or_no again. get_char(_) is similarly incorrect.�� Is there�� a predicate that is exactly equivalent to get0(_), or is there a more complex solution involving streams?��

Thanks in advance.