use strict;
use warnings;


my $y=666 if 1;

warn $y;


my $x=1;

my $x=42 for 1;

warn $x;


##</code><code>##

"my" variable $x masks earlier declaration in same scope at c:/tmp/pm/scope_postfix_for.pl line 12.
666 at c:/tmp/pm/scope_postfix_for.pl line 7.
Use of uninitialized value $x in warn at c:/tmp/pm/scope_postfix_for.pl line 16.
Warning: something's wrong at c:/tmp/pm/scope_postfix_for.pl line 16.