Thank you for your prompt reply. The program is this one: 
#!/usr/bin/perl -w

$im_thinking_of=int(rand10);
print "Pick a number:";
$guess=<STDIN>;
chomp $guess;

if ($guess>$im_thinking_of) {
print "You guessed too high!\n";
} elsif ($guess < $im_thinking_of) {
print "You guessed too low!\n";
} else {
print "You got it right!\n";
}

[download]
I have the following errors: 
Argument "rand10" isn't numeric in int at guess line 3

[download]
Furthermore, it always gives me the answer 
You guessed too high!

[download]
It is like it never reads elsif or else. This is only one example. I have other programs that have mistakes as well and it is not even my code. When I say that I copy and paste them, I mean that I read them from the book and write them again identically in my text editor.

In reply to Re^2: Differences between Perl 5.8 and Perl 5.18.2 by mbgbioinfo
in thread Differences between Perl 5.8 and Perl 5.18.2 by mbgbioinfo

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.