#!/usr/bin/perl

$count = .0;

while ($count < .9)
{
    $count = $count + .1;

    print ($count, "\n");
}

print ("End!\n");
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When using strict (which is a good thing), declaring variables happens like this:

my $count;
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Technically, you've initialised a variable, not declared it. Doing both at the same time:

my $count = 0.0;
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Update: This link may prove helpful.
Declaring variables

Ooh, thanks, that's wonderful. I assumed a variable was declared by being assigned a value in the first place.
Cheers. :D

When you use strict; (highly recommended btw.) you need to declare your variables so you need to stick my in front of the first assignment to $count. However, I'd be inclined to use a C type for loop in this case (note the declaration inside the loop header):

use strict;
use warnings;

for (my $count = 0.0; $count < 0.9; $count += 0.1) {
    print "$count\n";
}

print "End!\n";
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Note too that print doesn't need () and that variables can be interpolated directly into double quoted strings.

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Perl is environmentally friendly - it saves trees

Huh, I wonder why the tutorial uses (), then? Do they have any purpose or does it just make things look nice, what with all the rounded-off ends? XD

Thanks for that, by the way, I've always wanted to be able to compress scripts to be painfully tiny. (No sarcasm, it really does look impressive).

I did read that variables can be put in strings and I had it that way at the beginning, but I thought it might have been the problem and never changed it back after I tested that.

Thanks for the help.