Normally, you shouldn't need the number at all: 
my @dirs = ('/path/to/dir1', '/some/other/path/to/dir2', '/dir3');
for my $dir (@dirs) {
    ...
}

[download]

To populate the array with the names, you can use a map: 

my @dirs = map { sprintf 'abc_%03d', $_ } 1 .. 100;

[download]

If you really need the array index, loop over the indices rather than the elements themselves: 

for my $i (0 .. $#dirs) {
    my $dir = $dirs[$i];
    ...
}

[download]

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re: using an array in a while loop by choroba
in thread using an array in a while loop by perlnewbie

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