I am new to perl and I can't seem to find an answer for this nagging question.

What is the different between putting arguments when calling subroutines vs a blank subroutine call?

&example($1,$2,etc..); vs &example;

Why do you need to pass arguments when calling a subroutine when you can call/use them inside the subroutine without passing them first.

ex:

$xyz = 15;
&example;
sub example {
$a = $xyz + 49;
print $xyz;
print $a;}

what am I not getting, not understanding about the syntax? Thank you for any response.

In reply to subroutine syntax by Anonymous Monk

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