diff -up hello-1.0/hello.c.orig hello-1.0/hello.c
--- hello-1.0/hello.c.orig	2010-08-18 11:45:55.000000000 +0300
+++ hello-1.0/hello.c	2010-08-18 11:48:23.000000000 +0300
@@ -1,5 +1,7 @@
-int
-main()
+#include <stdio.h>
+
+int main(int argc, char *argv[])
 {
 	printf("hello\n");
+	return 0;
 }