at least one error in previous code ... while condition is wrong.
use strict;
use warnings;
my @FILES;
open $FILES[0], '<', 'file1' or die;
open $FILES[1], '<', 'file2' or die;
my @w = map scalar <$_>, @FILES;
my $empty = "blank line\n";
my %map = (
-1 => [ 0 ],
1 => [ 1 ],
0 => [ 0, 1 ],
);
while (defined $w[0] && defined $w[1]) {
my $cmp = $w[0] cmp $w[1];
print $cmp ? $empty : $w[0];
@w[ @{$map{$cmp}} ] = map scalar <$_>, @FILES[ @{$map{$cmp}} ];
}
# Leftover lines in either file?
print map $empty, map <$_>, @FILES;
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|