qn1

 <h1>sum of two numbers</h1>

<form method="post">

First Number : 

<input type="text" name="firstnum"><br><br>

Second Number : 

<input type="text" name="secondnum"><br><br>

<input type="submit" name="submit" value="sum">

</form>

<?php

if(isset($_POST['submit']))

{

$n1=$_POST['firstnum'];

$n2=$_POST['secondnum'];

$s=$n1+$n2;

echo "Sum of two numbers is ".$s;

}

?>

<p>Author : Sujit Thapa</p>