=question
<HEAD><TITLE>Question 3</TITLE></HEAD>
<H1>Question 3:</H1>
<P>
What does the chicken lips (<code>&lt;=&gt;</code>) operator do?
<P>
&nbsp;
<FORM ACTION="quiz.pl">
<P>
<INPUT TYPE="submit" NAME="answer" VALUE="1">
Exchanges two values.<BR>
<INPUT TYPE="submit" NAME="answer" VALUE="2">
There is a trick question. There is no such operator. <BR>
<INPUT TYPE="submit" NAME="answer" VALUE="3">
Compares two numbers and returns -1, 0, or 1, depending on the result.<BR>
</FORM>

=answer 1

<HEAD><TITLE>Wrong</TITLE></HEAD>
<H1>Wrong</H1>
<P>
Check out <i>perldoc perlop</i> and try again.


=answer 2

<HEAD><TITLE>Wrong</TITLE></HEAD>
<H1>Wrong</H1>
<P>
There really is such an operator.
Check out <i>perldoc perlop</i> and try again.

=right 3

<HEAD><TITLE>Right</TITLE></HEAD>
<H1>Right</H1>
<P>
For your information the string version of the operator is
<b>cmp</b>.

