hello,
I just installed swi and i get a bus error when i try to run /opt/
local/lib/swipl-5.6.52/bin/i386-darwin9.2.0/xpce or swipl. Am I doing
something wrong?
thank you

please make the following prolog program

i hav try .but require result not come
my predicatelike this
plz find out mistake from it.

listtran([],[]).
listtran([Ha/Ta],[Hb/Tb]):-tran(Ha,Hb),listtran(Ta,Tb).

the given question is this:

Suppose we are given a knowledge base with the following facts:
tran(eins,one).
tran(zwei,two).
tran(drei,three).
tran(vier,four).
tran(fuenf,five).
tran(sechs,six).
tran(sieben,seven).
tran(acht,eight...

I'm trying to write a program that prints formatted text for the
various steps in a derivation. The output of the program is used as
the input of another (non-Prolog) program that uses the derivation for
other purposes.

Here's a simplified example:

-------------------
happy(alice).
friend(carol, alice).
enemy(bob, carol).
enemy(bob, dan).

happy(X) :- friend(X,Y), happy(Y),
write(happy(Y)), write(' => '), writeln(X).
happy(X) :- enemy(X,Y), not(happy(Y)), enemy(X,Y),
write(unhappy(Y)), write(' => '), writeln(X).
-------------------

If I query:
?- happy(bob).

it outputs:

It's nearly 3 years since the last time I posted an fyi to this list,
so long that we've changed the name of the website!

We have SWI-Prolog and YAP installed, the problem with Prolog on the
benchmarks game has always been finding competent Prolog programmers
willing to spend a little time writing such uninteresting ill-suited
programs.

Here are the programs contributed for SWI-Prolog

http://shootout.alioth.debian.org/gp4sandbox/benchmark.php?test=all&lang=swiprolog&lang2...

I've transliterated just one of those to check that YAP was working

http://shootout.alioth.debian.org/gp4sandbox/benchmark.php?test=all&lang=yap&lang2...

If anyone is interested in contributing Prolog programs then the FAQ
provides plenty of information:

http://shootout.alioth.debian.org/gp4sandbox/faq.php

Hello,

I have created a predicate that takes a list and a character, and
returns the elements beginning with that character:

begin_with([H|T],X) :- sub_string(H,0,1,_,X), !, write(H), nl,
begin_with(T,X).
begin_with([H|T],X) :- begin_with(T,X).

Because of the 'write(H)' clause, Prolog just outputs the elements.
How can I save the returned elements in a list like for example:

begin_with([my,name,is,martin],m,List).

and Prolog returns: List = [my,martin]
true.

Thanks for your help!

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Hi Everyone
I am using eclipse clp version 5.10 on fedora core 6.
I want to know that is there any way to see the C code generated by
tkeclipse after compiling prolog file.

Hello,

there are two elements of Prolog syntax that I do not understand:

a) =.. and []

What are "=.." and "[]" used for here ?

vp(vt,VS,Form) :-
mappend(V,SS,VS),
word(vt,V,S,Form),
member(Type,S),
Type =.. [TYPE],
Cat =.. [TYPE,SS],
Cat.

2) Var-Var

What does "G0-G" (and others) mean in this example ?

vp(Vform,G0-G)

In some countries (particularly the Scandinavian ones) it
is traditional to solve puzzles/problems (= nuts) at Easter
time. Here's one which might be of interest to some readers.

The earliest possible (Gregorian) Easter Sunday falls this
year (2008). In what next 10 years does this recur again?
Please feel free to display the code/link of the Prolog
program used to compute these years. ;-)

I am trying to do a task I found on breadth first searchs but am
stuck! The task is a maze, at each node is a sound level the higher
the sound the closer the the exit you are. I have written a lot of
code for this task so far which I will post if anyone actually replys
to this message (prolog seems to be a hard area to get help for
online!)

Would anyone be able to help me get the solution to the task?