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• Please format your node based on the Writeup Formatting Tips
• Your code makes THREE attempts at opening the file. The first attempt probably succeeds, but your code does not bother to verify that. The second attempt probably fails, giving you the error message. Please see the sample code for the "open" function.
• The statement: "push @table,\@data;" adds ARRAY-REFERENCES as elements of @table.
  When you print an array reference, you get "ARRAY(0x<address>)" that you are seeing
• Squarebrackets with a number like "my $type=[4];" result in $type containing an array reference to a single-element (anonymous) array. The element's value is 4.
• It appears that you need a very simple parser - please post a small sample of the data, and how you would like the output to look, so monks can help write that for you, perhaps with a one-liner.

Your (incorrect) code should look like this, when posted to this site. This is produced using "code" tags:

use warnings;
use strict;

sub read_TABLE{
  my($file_name)=@_;
  open (OPEN_TABLE,$file_name);
  if(open (OPEN_TABLE, $file_name)){
          print "Can open file \"$file_name\" \n";
  }
  
  unless(open(OPEN_TABLE, $file_name)){
                          print STDERR "Can't open file \"$file_name\"
+ \n";
  }
  my@table;
  while(my$line=<OPEN_TABLE>){
      chomp $line;
      my @data=split(/\t/,$line,5);
      push @table,\@data;
  }
  close OPEN_TABLE;
  return @table;
}
my @s=read_table("TABLE.txt");

foreach my $line(@s) {
    my$start=[0];
    my$end=[1];
    my$name=[2];
    my$strand=[3];
    
    my$type=[4];
    print "$type\n";
}
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