#!/usr/bin/perl

use strict;
use warnings;

my @values = (
    ['T',20,'H'],
    ['Hallo',3,'Welt'],
    ['Test',1035,'Eintrag'],
);

my $length = 6;

print sprintf "%-7s| %s |%9s\n",'col1','col2','col3';
for my $ref ( @values ){
    print_formatted( $length, @$ref );
}

sub print_formatted{
    my ($max,$t1,$zahl,$t2) = @_;
    
    my ($rand) = int( ($max - length $zahl) / 2 );
    my $right  = $max - $rand - length $zahl;
    
    my $format = "%-7s|%*s%s%*s|%9s\n";
    print sprintf $format, $t1,$rand,' ',$zahl,$right,' ',$t2;
}