On Wed, 7 Dec 2005 [EMAIL PROTECTED] wrote: > Hi, > > I don't know why the result of my calculation doesn't make sense! > > > foreach('0.43','-0.12','-0.08','-0.17','-0.06') { > $value = $value + ($_); > } > print $value . "<br>"; > > Value = -2.77555756156289e-17 > Should be 0.00
What is the difference between -2.77555756156289e-17 and 0.00? It's all to do with the way numbers are represented in computers. Do a "perldoc -f sprintf" and have a read. Owen -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>