#!/usr/bin/perl

use strict;
use warnings;

my $variable1;
my $variable2;
...
...
### Rest of the code follows from below
...
...
### End of the code


##</code><code>##

#!/usr/bin/perl

use strict;
use warnings;

....
....
...
for (my  $variable1=0; $variable1 <= $#someArray; $variable++) {

### Do something here

...
...
}

...
### Rest of the code here
...