qn5

 <h2>program to input any number via form and check whether the number is positive or negative and be sure number should not be zero</h2>

<form method="post">

Enter number: 

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

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

</form>

<?php

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

$n=$_POST['num'];

if($n==0)

echo '<script>alert("Enter non zero number")</script>';

else if($n>0)

echo "Positive number";

else

echo "Negative number";

}

?>

<p>Author : Sujit Thapa</p>