Or even better, use strict; as shown here:
#! perl -w
use strict;
my @lines1= <DATA>;
print "number of lines = $#lines1\n";
my $fivefirstfile1= substr($lines1[2], 0, 5);
print "Five first characters are: $fivefprot1\n";
__DATA__
First line of the file.
Second line of the file.
Third line of the file.
Fourth line of the file.
Fifth line of the file.
Sixth line of the file.
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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>
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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).
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or How to display code and escape characters
are good places to start.
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