diff --git a/du4/program.c b/du4/program.c
new file mode 100644
index 0000000..dfe07fd
--- /dev/null
+++ b/du4/program.c
@@ -0,0 +1,7 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+int main(){
+  return 0;
+}