diff --git a/c/gtk-tutorial/helloworld/run_packing.sh b/c/gtk-tutorial/helloworld/run_packing.sh
index 472ed8f..73d8a5b 100755
--- a/c/gtk-tutorial/helloworld/run_packing.sh
+++ b/c/gtk-tutorial/helloworld/run_packing.sh
@@ -1,3 +1,6 @@
 #!/bin/bash
 
-gcc -Wall -g packing_demo.c -o packing_demo `pkg-config --cflags gtk+-3.0` `pkg-config --libs gtk+-3.0` && ./packing_demo
+gcc -Wall -g packing_demo.c -o packing_demo `pkg-config --cflags gtk+-3.0` `pkg-config --libs gtk+-3.0`
+./packing_demo 1
+./packing_demo 2
+./packing_demo 3