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Code Wizard, 12-30-2006

This is a calculater that can add, subtract, multiply, and divide. You need two files, and they have to be these names, unless you feel like doing some code editing. Put them inside the same folder.

// First file: a html file
<form action="calculater.php3" method="post">
<center><input type="text" name="num"> <select name="by"><option value="add">Add<option value="minus">Minus<option value="times">Multiply<option value="divide">Divide</select> <input type="text" name="num2"> <input type="submit" value="Calculate"></center>

// Next file: a php file save as: calculater.php3.

if($by == "add"){
echo $num + $num2;
} elseif($by == "minus"){
echo $num - $num2;
} elseif($by == "times"){
echo $num * $num2;
} elseif($by == "divide"){
echo $num / $num2;

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