Since you claim to be new (like me), some comments on your code:

my $i="";
my $t="";
my @data="";

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Variables that have never been used have the special undef value. What happens if you use a variable that has the undef value? Nothing serious

If you use it as a number it takes on the value 0 (zero). If you use it as a string it takes on the value of an empty string. You do not have to set them to "". You use $i and $t as numeric values in your code so setting them to "" is kinda confusing.

Setting the array @data to "" does not make much sense for an array either. If you want to empty an array assign it to an empty list:

my @data = ();

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But a new array starts out this way anyway.

Now lets take a look at your loops...

$lines=scalar@data/4;

for ($t=1; $t<=$lines; $t++) {

for ($i=1; $i<=4; $i++) {

    $items=shift(@data);
   
    print $items;
}

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($t=1; $t<=$lines; $t++) works, but it is more common to start with $t=0 and use $t<$lines as the termination.

Getting used to this will prevent you from getting into trouble when indexing through arrays which start with an index of zero. It also prevents a finger-flub of forgetting the = in the condition.


Lou

Update: Oh, one more thing that is good to get used to when you are new. Besides using use strict;, also consider...

use warnings;    # flags many questionable constructs
use diagnostics; # makes error messages much more understandable

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Lou

In reply to Re: Array manipulation by TheStudent
in thread Array manipulation by loop362

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