<!-- 

	Assignment 2 Page 3
-->

<?php   session_start();        ?>

<?php
        $pass = $_SESSION['psw'];
        if($pass != "hw22") print "Wrong password";
        else
        {
?>

<center>
<font color=green>
<H2> Roots </H2>
<HR>
</font>
<font color=black>
<?php
        $a = $_POST['aVar'];
        $b = $_POST['bVar'];
        $c = $_POST['cVar'];
        $des = pow($b,2) - 4 * $a * $c;

//debugging

        print "a= $a, b= $b, c= $c.<p>";
        if($a==0)
        {
                print "NO REAL ROOTS";
        }

        elseif($des >=0)
                {
                        $x1 = (-$b + pow($des, 0.5))/(2 * $a);
                        $x2 = (-$b - pow($des, 0.5))/(2 * $a);
                        $x1 = number_format($x1,1);
                        $x2 = number_format($x2,1);
                        print "Roots: $x1, $x2";
                }
                else
                {
                        print "NO REAL ROOTS.";
                }
?>
</font>
</center>
<?php 
	}
?>