Please enter a whole number ... <br />
<b>Warning</b>:  Use of undefined constant STDIN - assumed 'STDIN' (this will throw an Error in a future version of PHP) in <b>/home/ecohappy/public_html/MinimalPro/MinimalPro Admin/assets/vendor_plugins/ace-builds-master/demo/kitchen-sink/docs/php.php</b> on line <b>13</b><br />
<br />
<b>Warning</b>:  fgets() expects parameter 1 to be resource, string given in <b>/home/ecohappy/public_html/MinimalPro/MinimalPro Admin/assets/vendor_plugins/ace-builds-master/demo/kitchen-sink/docs/php.php</b> on line <b>13</b><br />


Factorial  = 1