diff --git a/atoi_print.c b/atoi_print.c
--- a/atoi_print.c
+++ b/atoi_print.c
@@ -13,5 +13,6 @@
 
     for (i = 1; i < argc; i++)
         printf ("atoi(%s):=%d\n", argv[i], atoi (argv[i]));
-    return 0;
+
+    return EXIT_SUCCESS;
 }