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POSyntax error: Operator expected
 

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  1. POSyntax error: Operator expected
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    <p>I have problem with my Prolog program..it seem to have error but i dont know what it is..can someone give me idea how to solve it??? the error starts from the line 'symptom' here are my code:</p> <pre><code>go:- write('insert patient name'),nl, read(Patient),nl,Patient=Patient, hypothesis(Patient,Disease), write(Patient),('probably has'),write(Disease),nl. go:- write('sorry,the disease'),nl,write('cannot be diagnosed'),nl. symptom(Patient,abdominal pain):- write('does'),write(Patient), write('have abdominal pain y/n'),read(Reply), Reply=y,nl. symptom(Patient,fever):- write('does'),write(Patient),write('have a fever (y/)?'), read(Reply), Reply=y,nl. symptom(Patient,blood or mucus in stool):- write('does'),write(Patient)write('have blood or mucus in stool(y/n)?'), read(Reply), Reply=y,nl. symptom(Patient,nausea and vomiting):- write('does'),write(Patient)write('have nausea and vomiting (y/n)?'), read(Reply), Reply=y,nl. symptom(Patient,diarrhea):- write('does'),write(Patient)write('have diarrhea (y/n)?'), read(Reply), Reply=y,nl. symptom(Patient,leg cramp):- write('does'),write(Patient)write('leg cramp(y/n)?'), read(Reply), Reply=y,nl. symptom(Patient,abdominal cramp):- write('does'),write(Patient)write('have abdominal cramp(y/n)?'), read(Reply), Reply=y,nl. symptom(Patient,cold skin):- write('does'),write(Patient)write('have cold skin (y/n)?'), read(Reply), Reply=y,nl. symptom(Patient,weak pulse):- write('does'),write(Patient)write('have weak pulse(y/n)?'), read(Reply), Reply=y,nl. symptom(Patient,voice change):- write('does'),write(Patient)write('have voice change(y/n)?'), read(Reply), Reply=y,nl. symptom(Patient,sea sickness):- write('does'),write(Patient)write('have sea-sickness(y/n)?'), read(Reply), Reply=y,nl. symptom(Patient,upset stomach):- write('does'),write(Patient)write('have upset stomach(y/n)?'), read(Reply), Reply=y,nl. symptom(Patient,feeling green around the gill):- write('does'),write(Patient)write('have feeling green around the gill(y/n)?'), read(Reply), Reply=y,nl. symptom(Patient,weakness):- write('does'),write(Patient)write('have weakness(y/n)?'), read(Reply), Reply=y,nl. symptom(Patient,flu like symptom):- write('does'),write(Patient)write('have flu-like symptom(y/n)?'), read(Reply), Reply=y,nl. symptom(Patient,fatigue):- write('does'),write(Patient)write('have fatigue(y/n)?'), read(Reply), Reply=y,nl. symptom(Patient,intestinal pain):- write('does'),write(Patient)write('have intestinal pain(y/n)?'), read(Reply), Reply=y,nl. symptom(Patient,straining at stool):- write('does'),write(Patient)write('have straining at stool(y/n)?'), read(Reply), Reply=y,nl. hypothesis(Patient,chorela):- symptom(Patient,diarrhea), symptom(Patient,vomiting), symptom(Patient,leg cramp), symptom(Patient,cold skin), symptom(Patient,weak pulse), symptom(Patient,voice change). hypothesis(Patient,gastroenteritis):- symptom(Patient,vomiting), symptom(Patient,nausea), symptom(Patient,diarrhea), symptom(Patient,sea sickness), symptom(Patient,upset stomach), symptom(Patient,feeling green around the gill), symptom(Patient,abdominal pain), symptom(Patient,weakness), symptom(Patient,flu like symptom), symptom(Patient,fatigue), symptom(Patient,blood or mucus in stool). hypotesis(Patient,shigellosis):- symptom(Patient,diarrihea), symptom(Patient,fever), symptom(Patient,nausea), symptom(Patient,vominting), symptom(Patient,abdominal pain), symptom(Patient,intestinal pain), symptom(Patient,straining at stool), symptom(Patient,blood or mucus in stool). </code></pre>
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    1. COMaybe you could share with us the line and column of the error as reported by the compiler? I'm not very fond of guessing.
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