Equal to operand

From: rasayani (vividh_at_hotmail.com)
Date: 04/28/04 

Date: 27 Apr 2004 23:30:08 -0700

Does anyone know what the advantage is of using the following statement

char *p = NULL;
if (NULL == p)
 {

 }

over

char *p = NULL;
if (p == NULL)
 {

 }