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28 lines
562 B
Mathematica
28 lines
562 B
Mathematica
%---------------------------------------------------------------------------%
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% vim: ts=4 sw=4 et ft=mercury
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%---------------------------------------------------------------------------%
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:- module tricky_ite.
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:- interface.
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:- import_module io.
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:- pred main(io::di, io::uo) is det.
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:- implementation.
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:- import_module int.
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:- import_module require.
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main(!IO) :-
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( if p(42, X) then
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error("blah"),
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io.write(X, !IO)
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else
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io.write_string("No.\n", !IO)
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).
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:- pred p(int::in, int::out) is nondet.
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p(42, 1).
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p(42, 2).
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p(42, 3).
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