From cbee4361a195425b12daba6cdb286d2d84e18c0e Mon Sep 17 00:00:00 2001
From: Simon Bruder <simon.bruder@mailbox.tu-dresden.de>
Date: Sat, 22 Apr 2023 09:59:12 +0200
Subject: [PATCH] u01: Add include guard to header

---
 u01/node.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/u01/node.h b/u01/node.h
index 1632899..6d15ef4 100644
--- a/u01/node.h
+++ b/u01/node.h
@@ -1,3 +1,5 @@
+#ifndef _NODE_H
+#define _NODE_H
 #include <memory>
 #include <string>
 #include <vector>
@@ -19,3 +21,4 @@ private:
 };
 
 node *create_complete_tree(std::size_t nr_child_nodes, unsigned int tree_depth);
+#endif