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need urgent help with parser
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| Pro_novice 2004-09-26, 3:56 am |
| im a beginner in PROLOG.i need urgent help with a simple prolog code.i need
to write a predicate parse/2 that would check the validity of an input
string against the given grammar.for eg.
?- parse(s, [a, b]).
Yes
should be the output.could any one let me know how to write the predicate
for this.
Thanks.
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| Nick Wedd 2004-10-12, 8:56 am |
| In message
< 09e77daf92c4fc32d1d852f4f31c72c1@localho
st.talkaboutprogramming.com>,
Pro_novice <cyb014@rediffmail.com> writes
>im a beginner in PROLOG.i need urgent help with a simple prolog code.i need
>to write a predicate parse/2 that would check the validity of an input
>string against the given grammar.for eg.
>
>?- parse(s, [a, b]).
>Yes
>
>should be the output.could any one let me know how to write the predicate
>for this.
I don't understand this. For one thing, it sounds far too hard for a
beginner. For another, you refer to "an input string" and "the given
grammar". But in your sample call parse(s, [a, b]), there is no
string. And is [a, b] in some way a grammar?
Nick
--
Nick Wedd nick@maproom.co.uk
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