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2*pi*$r -- constant function without prototype

by ambrus (Abbot)
on May 01, 2008 at 10:04 UTC ( [id://683898]=perlmeditation: print w/replies, xml ) Need Help??

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  1. or download this
    sub pi { 2*atan2(1,0) }
$circumference = 2*pi*$r;

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