<div dir="ltr"><div dir="ltr"><div>CS3 student,</div><div><br></div><div>The less than function in student class is as following at this moment:</div><div><br>   friend bool operator&lt; (Student left, Student right){<br>      return left.lastName_ &lt; right.lastName_ ||<br>         (left.lastName_ == right.lastName_ &amp;&amp; <br>          left.firstName_ &lt; <b>left</b>.firstName_);<br>   }</div><div><br></div><div>It should be: <br></div><div><br></div><div>   friend bool operator&lt; (Student left, Student right){<br>      return left.lastName_ &lt; right.lastName_ ||<br>         (left.lastName_ == right.lastName_ &amp;&amp; <br>          left.firstName_ &lt; <b>right</b>.firstName_);<br>   }</div><div><br></div><div>Thanks</div><div><br></div></div></div>