Math Function Library

Code:

<?php
     function subtract($n1, $n2) {
          return $n1 - $n2;
     }
   
     function add($n1, $n2) {
          return $n1 + $n2;
     }
   
     function divide($n1, $n2) {
          if($n2 == 0)
               return -1;
          else
               return $n1 / $n2;
     }
   
     function multiply($n1, $n2)
     {
          return $n1 * $n2;
     }
   
     function to_pow($n1, $pow)
     {
          if($pow)
               return $n1 * to_pow($n1, $pow - 1);
          return 1;
     }
     print(to_pow(6, 1) . "<br />");
     print(multiply(5, 10) . "<br />");
     print(divide(5, 10) . "<br />");
     print(subtract(10, 50) . "<br />");
     print(add(10, 5) . "<br />");
?>
</body>
</html>

_________________
M. S. Rakha, Ph.D.
Queen's University
Canada

Author: DrRakha
Mastermind

Posts: 2715
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