note Nkuvu <p>If you had <c>use warnings</c> in the script you'd see something like <c>"my" variable $foo masks earlier declaration in same scope at scriptname.pl line 6.</c> </p> <p>I'm pretty sure that Perl is parsing the script prior to actually executing it, seeing the second declaration of <c>$foo</c> which masks the first declaration, and using that second variable in the same scope to actually execute the script. So you're calling the subroutine before defining the second <c>$foo</c>, meaning you print an uninitialized value.</p> <p>You would see the same output if you had a script like<br> <c>use strict; foo(); my $foo = 2; sub foo { print "foo: $foo\n"; }</c></p> 756943 756943