$ perl -E 'for( my $i=0; $i<10; $i++ ){say "Inside loop: $i";} say "Outside loop: $i";'
Inside loop: 0
Inside loop: 1
Inside loop: 2
Inside loop: 3
Inside loop: 4
Inside loop: 5
Inside loop: 6
Inside loop: 7
Inside loop: 8
Inside loop: 9
Outside loop:

##</code><code>##

...
Inside loop: 9
Use of uninitialized value $i in concatenation (.) or string at -e line 1.
Outside loop: