I'm following no modules approach to find the day of year based on the user provided date. 
#!/usr/local/bin/perl
sub dayofyear {
      ($day1,$month,$year)=@_;
       my(@d_in_m)=(0,31,28,31,30,31,30,31,31,30,31,30,31);
      $d_in_m[2]=29 if (&leap($year));
             for($i=1;$i<$month;$i++) {
                 $k += $d_in_m[$i];
             }
             $k += $day1;
      return $k;
}
sub leap {
   $y = shift;
   return 0 unless $y % 4 == 0;
   return 1 unless $y % 100 == 0;
   return 0 unless $y % 400 == 0;
   return 1;
}
print dayofyear(10,3,2005);

[download]
It's printing the correct value. Is there any way to optimize the above code / do it in a better way?

--Binoj

In reply to day of year calculation by lamp

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.