Question

Ok i got these two predicated hangman and graphics

fail([]).

hangman:-
    getPhrase(Ans), 
    !, 
    write('Welcome to hangman.'),
    nl,
    fail(FailedList), 
    graphics(FailedList), %<--- The call is made here.
    name(Ans,AnsList), 
    makeBlanks(AnsList, BlankList),
    getGuess(AnsList,BlankList, FailedList).


graphics(FailedList):-
    length(FailedList, L),
    L == 0,
    write('-----------'), nl,
    write('|'), nl,
    write('|'), nl,
    write('|'), nl,
    write('|'), nl,
    write('|'), nl,
    write('|'), nl,
    write('|'), nl,
    write('|'), nl,
    write('/\'), nl.

Why do i get the error: ERROR: hangman/0: Undefined procedure: graphics/1?
Note that if i put the predicate graphics inside hangman in comments my program works fine.

Answer 1

 write('/\'), nl.

In the last line, you are escaping the ending quotation mark with \'. Change it to:

 write('/\\'), nl.

BTW: @Mog has written the answer before I had a look at the comments, I tested it and now it finds graphics/1.