--- do_radii.c.orig	Mon Aug 23 07:53:31 2010
+++ do_radii.c	Mon Aug 23 07:53:52 2010
@@ -290,6 +290,8 @@ modification follow.
 
 */
 
+#include <string.h>
+#include <ctype.h>
 
 #include "periodic.h"
 #include "info.h"