Understood

This is what I have so far...

#!/usr/bin/perl
use strict;
use warnings; 
use Text::CSV; 
use Date::Calc qw(:all);
use Date::Calendar;

#-------------------------------------------
#
#-------------------------------------------


#---------------------------------------
# Edit Custom Variables Below
#---------------------------------------

#--------------------------------
# Input and Output files
#--------------------------------

#IN is the directory/filename.csv that the input csv is being written 
+to
#OUT is the directory/filename.csv that the output csv
#my $in = '/opt/data/input.csv';
#my $out = '/opt/data/output.csv';
my $in = 'c:/Users/cottenr/test.csv';
my $out = 'c:/Users/cottenr/foo.csv';


my $employee_number;
my $employee_id;
my $start_date;
my $end_date;
my $total_days;

 
#---------------------------------------
# Program and Loop Section
#---------------------------------------

#Looking for csv file to be written
#START:
while ( -e $in){ 

 my $csv = Text::CSV->new ({  
    binary    => 1,  
    auto_diag => 1,  
    sep_char  => ','    # not really needed as this is the default
}); 

#Open IN and OUT files
open(my $data, '<:encoding(utf8)', $in) or die "Could not open '$in' f
+ile \n";
<$data>;  #skips header line of .csv file
open(OUT, '>encoding(utf8)', $out) or die "Could not open '$out' file\
+n";


#Loop through the file and process data
while (my $fields = $csv->getline( $data )) {  
    $employee_number = $fields->[2];
    $employee_id = $fields->[4];
    $start_date = $fields->[17];
    $end_date = $fields->[18];
    $total_days = $fields->[21];
    
#Conditional eval for Date Comparison
if($end_date > $highnumber) {

} elsif ($count > $mednumber) {

} else {
      
  }


#Layout the format and write to OUT file
print OUT "$employee_number, $employee_id, $start_date, $end_date, $to
+tal_days\n";

} #While loop
if (not $csv->eof) {  
    $csv->error_diag();
}

#---------------------------------------
# Finish it up!
#---------------------------------------

#Print out the footer

#Close the IN and OUT files
close $data;
close $in;
close OUT;
#Delete the INPUT csv file
#unlink $in;
}

#---------------------------------------
# Take a Nap and do it all over again
#---------------------------------------

#sleep 60;
#goto START;
[download]

Not sure how to go about pulling the first line of the Array and then searching for other matches to see if the Start date -2days of line 2 is the enddate of line 1. If it matches then add total time and update my enddate on the OUT.

Thanks, Ray