diff --git a/codes/cpp/.gitignore b/codes/cpp/.gitignore
index 08b67f32c..dc1ffacf4 100644
--- a/codes/cpp/.gitignore
+++ b/codes/cpp/.gitignore
@@ -5,4 +5,6 @@
 # Unignore all dirs
 !*/
 
-*.dSYM/
\ No newline at end of file
+*.dSYM/
+
+build/
diff --git a/codes/cpp/CMakeLists.txt b/codes/cpp/CMakeLists.txt
index 20705d64a..9e3f5583a 100644
--- a/codes/cpp/CMakeLists.txt
+++ b/codes/cpp/CMakeLists.txt
@@ -5,12 +5,12 @@ set(CMAKE_CXX_STANDARD 11)
 
 include_directories(./include)
 
-add_subdirectory(chapter_tree)
+add_subdirectory(chapter_computational_complexity)
+add_subdirectory(chapter_array_and_linkedlist)
 add_subdirectory(chapter_stack_and_queue)
-add_subdirectory(chapter_sorting)
-add_subdirectory(chapter_searching)
+add_subdirectory(chapter_hashing)
+add_subdirectory(chapter_tree)
 add_subdirectory(chapter_heap)
 add_subdirectory(chapter_graph)
-add_subdirectory(chapter_hashing)
-add_subdirectory(chapter_computational_complexity)
-add_subdirectory(chapter_array_and_linkedlist)
\ No newline at end of file
+add_subdirectory(chapter_sorting)
+add_subdirectory(chapter_searching)