<center>

<?php
	$pass = $_WEBEXAM['psw'];
	if($pass != "hw21")	print "Go away.";
	else
	{
?>
<?php
        $a1 = $_POST['q1'];
        $a2 = $_POST['q2'];
        $a3 = $_POST['q3'];
        $a4 = $_POST['q4'];
        $score = 0;

        if($a1 == "t1")
        {
                $score += 25;
                print "Answer right for q1!<p>";
        }
        else
        {
                print "Wrong answer for q1!<p> The answer should be 'A'<p>";
        }
        if($a2 == "t2")
        {
                 $score += 25;
                 print "Answer right for q2!<p>";
        }
        else
        {
                 print "Wrong answer for q2!<p> The answer should be 'B'<p>";
        }
        if($a3 == "t3")
        {
          $score += 25;
                 print "Answer right for q3!<p>";
        }
        else
        {
                 print "Wrong answer for q3!<p> The answer should be 'C'<p>";
        }
        if($a4 == "t4")
        {
                 $score += 25;
                 print "Answer right for q4!<p>";
        }
        else
        {
                 print "Wrong answer for q4!<p> The answer should be 'D'<p>";
        }
        print "<p>Total score: $score%";


?>

</center>