Using only Perl standard modules:

use strict;
use warnings;

use Time::Local;
use POSIX 'strftime';

while (1) {
  print "Enter year (yyyy) and month (mm), separated by a space: ";
  chomp(my $input = <STDIN>);
  last if !$input;
  next unless $input =~ /(\d{4})\s+(\d\d?)/;

  my ($year, $month) = ($1, $2);
  my ($y, $m) = ($year, $month);

  $y -= 1900;
  if ($m == 12) {
    $m = 0;
    ++$y;
  }
  my $first = timelocal(0, 0, 0, 1, $m, $y);
  my $last = $first - 24*60*60;

  print "The last day of $month/$year will be a ",
        strftime('%A', localtime $last), "\n";
}

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<http://dave.org.uk>

"The first rule of Perl club is you do not talk about Perl club."
-- Chip Salzenberg

In reply to Re: Determining the dayname for the last day of any given month by davorg
in thread Determining the dayname for the last day of any given month by McDarren

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