--- a/atoi_print.c
+++ b/atoi_print.c
@@ -8,7 +8,7 @@
 
 int main (int argc, char **argv)
 {
-    int i;
+    unsigned int i;
 
     for (i = 1; i < argc; i++)
         printf ("atoi(%s):=%d\n", argv[i], atoi (argv[i]));