diff --git a/du3/program.c b/du3/program.c
index 541c5a5..679a0f5 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -84,7 +84,7 @@ int main(){
         print_s(&mystack);
     }
     
-    
+    printf("no input\n");
     return 0;
 }