--- main.c.orig	2000-06-22 22:58:07 UTC
+++ main.c
@@ -24,6 +24,7 @@
 
 #include <time.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <unistd.h>
 #include <signal.h>
 #include <fcntl.h>