Hi,

please take this as a starting point:

#!/usr/bin/env perl
use strict;
use warnings;

my $line = <STDIN>;
my $day;
my $month;
my $year;

chomp($line);
if($line =~ /^([0-3][0-9])-([01][0-9])-([0-9]{4})$/) {
    $day = $1;
    $month = $2;
    $year = $3;
}
else {
    die "ERROR: Wrong date format, please provide DD-MM-YYYY: $line";
}
print "Date is: $year-$month-$day\n";
[download]

You have to add code to check whether the date is a valid date.

McA