The classical introductory exercise. Just say "Hello, World!".
"Hello, World!" is the traditional first program for beginning programming in a new language or environment.
The objectives are simple:
If everything goes well, you will be ready to fetch your first real exercise.
This is an exercise to introduce users to using Exercism http://en.wikipedia.org/wiki/%22Hello,_world!%22_program
It's possible to submit an incomplete solution so you can see how others have completed the exercise.
% Please visit https://exercism.io/tracks/prolog/installation
% for instructions on setting up prolog.
% Visit https://exercism.io/tracks/prolog/tests
% for help running the tests for prolog exercises.
% The goal below allows tests to be skipped
% unless the "--all" flag is passed at
% the command line.
pending :-
current_prolog_flag(argv, ['--all'|_]).
pending :-
write('\nA TEST IS PENDING!\n'),
fail.
:- begin_tests(hello_world).
test(hello_world, condition(true)) :-
hello_world('Hello World!').
% Once the first test passes, un-skip the following test by
% changing `pending` in `condition(pending)` to `true`.
% Repeat for each test until they are all passing.
:- end_tests(hello_world).
hello_world('Hello World!').
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