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division evaluates to zero
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Lisa D'Aniello
Ranch Hand
Joined: Sep 25, 2003
Posts: 42
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 Ok, this is so stinkin' basic, I'm embarrassed to even post the question, but...
long section1score = Long.valueOf(request.getParameter("score1")).longValue() + Long.valueOf(request.getParameter("score2")).longValue();
double section1perct = (section1score/40)*100;
...Why on earth does this evaluate to zero??? section1score holds a value of 20.
Thanks!
Lisa
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marc weber
Sheriff
Joined: Aug 31, 2004
Posts: 11343
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Integral division always truncates. If you want a floating-point result, you will need to perform the division with a floating-point type. One way to accomplish this is to simply make the literal 40 a double...
(section1score/40.0)*100;
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"We're kind of on the level of crossword puzzle writers... And no one ever goes to them and gives them an award." ~Joe Strummer
sscce.org
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Lisa D'Aniello
Ranch Hand
Joined: Sep 25, 2003
Posts: 42
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Thank you!
Goodness, what a silly oversight on my part...
Thanks Again!
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subject: division evaluates to zero
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