use strict; use warnings; 
{
  print "using exterior values\n"; 
  my $y=1; 
  my $z=1; 
  my $hoeveel=5; 
  for (my $i=1; $i <= $hoeveel; $i++) {
     $y = $y + 155;
     $z = $z +1;
     print "$y $z\n"; 
  };
}

{
  print "using localizing interior values\n"; 
  my $y=1; 
  my $z=1; 
  my $hoeveel=5; 
  for (my $i=1; $i <= $hoeveel; $i++) {
     my $y = $y + 155;
     my $z = $z +1;
     print "$y $z\n"; 
  };
}

##</code><code>##

using exterior values
156 2
311 3
466 4
621 5
776 6
using localizing interior values
156 2
156 2
156 2
156 2
156 2