Hello! I was just implementing this small program for calculating the line- equation, given two points. Just in case you don't remind this equation.... y = slope * x + b. First I calculate the slope and then b:
$slope = ($ARGV[1] - $ARGV[3]) / ($ARGV[0] - $ARGV[2]); $b = $ARGV[1] - ($ARGV[0] * $slope); print "\n$ARGV[1] = $slope * $ARGV[0] + $b\n"; For this input : perl my_program 16.81 16.57 0 0 It gives me this result : 16.57 = 0.985722784057109 * 16.81 + 0 Clearly b can be 0 only if the slope is 1. I don't know the reason for this result (I guess precission but that's the only thing I could say), neither how to solve it. Please what should I do to get the correct result? Thank you camotito -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/
