To answer the subject - you have a number of syntactical and semantic errors here.

First, you probably want () rather than {} on the @c and @d initialisation lines:

  my @c = ( 22, 44, 55 );
  my @d = ( 'yy', 'tt' );
# or
  my @d = qw(yy tt);
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Second, your assignments - an array, such as @b, can only hold scalars - not other arrays. That said, a reference to an array is a scalar. Thus, you probably want:

  $b[0] = \@c; # hold a reference to @c.
  $b[1] = \@d;
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  my @e = @{$b[1]};
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Hope that helps.

I don't know exactly what you're trying to do, but I would guess you want something like this.

my @c = ( 22, 44, 55 );
my @d = ( 'yy', 'tt' );
my @b;
@b[0,1] = ( $c[0], $d[0] );
my @e = ( $b[1] );
print "<$e[0]>\n";
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Mmm, yes, I should better explain what I am wanting to do. I want to get an array of arrays of variable size of strings. I have "blocks" of lines of text and i want to manipulate them. So I want to store 'yy' in the first line of my second block then get it back.

almost every line? :)

Let's deal with this by running the program. first trun on strict and wranings warnings. See my first 2 lines in the code

use strict;
use warnings;

my @b;
my @c={ 22,44,55};  
my @d={ "yy","tt"}; 
$b[0]=@c;           # are you trying to create 2-D array?
$b[1]=@d;
my @e= $b[1];       # i think you want b as 2-D array
print "<$e[0]>\n";
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when you run it as is you get this warning

Odd number of elements in anonymous hash at nov line 7.<1> Once you change {} to  () the code works but it does not do what you want. See $b[0] is a scalar and an array when evaluated under the scalar context returns the lenght of the array so bascially  $b[0] = @c; will put 3 into $b[0] or the first element of b.

If you want to do 2-D arrays you want to send them as references.

The code below does that

use strict;
use warnings;

my @b;
my @c=( 22,44,55);  # changed to ()
my @d=( "yy","tt"); # changed to ()
$b[0]=\@c;              # \@ creates a reference to the array @c.
$b[1]=\@d;
my @e= @{$b[1]};       # $b[1] is an array ref so use @{} to get back 
+the list.
print "<$e[0]>\n";
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output:

<yy>
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hope this helps

There are a few problems here. As friedo (Update: and others too, apparently) already pointed out, you're using anonymous hashref constructors where you appear to want a simple list grouping construct. Also, you're attempting to assign entire arrays as the value for $b[0] and $b[1], but array values can only be scalars (not arrays, or hashes).

Put bluntly, it appears that you don't know a whole lot of Perl and are just trying things at random. Perhaps you should spend some more time learning the language, using a resource designed specifically for that? Maybe a stop over to http://learn.perl.org/ would do you well.