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<!--
File: passcalculator.php
Assignment: 2 Part: d
Due: Feb. 19, 2018
Author: Ikechukwu Etonyeaku
Goal: Based on the general calculator in Pages 47-49, secure the Web pages by adding a login
page with the password of hw2d to access the tool, and also add the additional operations
of modulus (a%b) and power (ab) to the operation form.
-->
<?php session_start();
?>
<?php
$pass = $_SESSION['psw'];
if($pass != "hw2d")
print "Sorry wrong password buddy.";
else
{
?>
<HTML>
<style>
body {
border: 2px solid black;
padding: 25px;
background:url(http://www.avatarys.com/var/albums/SPORT-IMAGES-%26-BACKGROUNDS/Sport-Logos/English-Premier-League-Logos/1920x1080-Cool-Soccer-Logos/Ac%20milan%20logo%20football%20Cool%20Soccer%20Wallpapers%201920x1080.jpg?m=1435255621);
background-repeat:no-repeat;
background-size: auto;
}
.black_bg
{
background-color: black;
padding: 3px;
}
</style>
<Font color = White>
<CENTER>
<H2><span class = "black_bg"><strong>General Calculator</span> </H2>
<HR>
<?php
$op = $_POST['op']; // "add",
$num1 = $_SESSION['v1'];
$num2 = $_SESSION['v2'];
print "The num1 is $num1<BR>";
print "The num2 is $num2<BR>";
print "The operator is $op <HR>";
if($op == "add")
{ $ans = $num1 + $num2;
print "$num1 + $num2 = $ans";
}
else if($op == "sub")
{ $ans = $num1 - $num2;
print "$num1 - $num2 = $ans";
}
else if($op == "mul")
{ $ans = $num1 * $num2;
print "$num1 * $num2 = $ans";
}
else if($op == "div")
{ $ans = $num1 / $num2;
print "$num1 / $num2 = $ans";
}
else if($op == "mod")
{ $ans = $num1 % $num2;
print "$num1 % $num2 = $ans";
}
else if($op == "pow")
{ $ans = pow($num1,$num2);
print "$num1^$num2 = $ans";
}
?>
<HR>
<A HREF=index.html><span class = "black_bg">Go Home</span></A>
</FONT>
</center>
</html>
<?php
}
?>