Or 
#!/usr/bin/perl -w

use strict;

use Params::Validate qw' validate_pos ';

Main( @ARGV );
exit( 0 );

sub Foo
{
  validate_pos( @_, 1, 1, 1 );
  print "$_\n" for @_;
  print "---\n";
}


sub Main
{
  Foo(1,2,3);
  Foo(1,2,3,4);
  Foo(1,2,3,4,5);
}
__END__

1
2
3
---
1
2
3
---
4 parameters were passed to main::Foo but 3 were expected
 at - line 12
        main::Foo(1, 2, 3, 4) called at - line 21
        main::Main() called at - line 7

[download]

In reply to Re^2: Limit number of Sub routine argument list by Anonymous Monk
in thread Limit number of Sub routine argument list by ganeshwari

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.