diff --git a/Project/CMakeLists.txt b/Project/CMakeLists.txt
index 75ea99a..5e1020b 100644
--- a/Project/CMakeLists.txt
+++ b/Project/CMakeLists.txt
@@ -51,15 +51,17 @@ if( CMAKE_BUILD_TYPE STREQUAL "debug" )
 	add_definitions(-D_DEBUG)
 endif()
 
-macro( add_executable _number _name )
+macro( add_executable _type _number _name )
 	set( TARGET_NAME "${_number}-${_name}" )
-	_add_executable( ${TARGET_NAME} ${ARGN} )
+	file( GLOB PROJECT_FILES "${CMAKE_CURRENT_LIST_DIR}/${_type}/${_number}/*.*" )
+	_add_executable( ${TARGET_NAME} ${ARGN} ${PROJECT_FILES} )
 	target_compile_definitions( ${TARGET_NAME} PRIVATE USE_SWAPCHAIN_EXTENSIONS )
 	target_link_libraries( ${TARGET_NAME} ${PLATFORM_LIBRARY} )
-	set_property( TARGET ${TARGET_NAME} PROPERTY FOLDER "Tutorials" )
+	set_property( TARGET ${TARGET_NAME} PROPERTY FOLDER "${_type}" )
 
-	if( EXISTS "${CMAKE_SOURCE_DIR}/Tutorial${_number}/Data${_number}/" )
-		file( COPY "${CMAKE_SOURCE_DIR}/Tutorial${_number}/Data${_number}/" DESTINATION "${CMAKE_SOURCE_DIR}/build/Data${_number}" )
+	if( EXISTS "${CMAKE_SOURCE_DIR}/${_type}/${_number}/Data" )
+		file( GLOB DATA_FILES "${CMAKE_SOURCE_DIR}/${_type}/${_number}/Data/*.*" )
+		file( COPY ${DATA_FILES} DESTINATION "${CMAKE_SOURCE_DIR}/build/Data/${_type}/${_number}/" )
 	endif()
 endmacro()
 
@@ -114,46 +116,21 @@ source_group( "Source Files\\Common" FILES ${ADVANCED_SHARED_SOURCE_FILES} )
 source_group( "Header Files" FILES ${TUTORIAL_HEADER_FILES} )
 source_group( "Source Files" FILES ${TUTORIAL_SOURCE_FILES} )
 
-_add_executable( "01-The_Beginning"
-	${ALL_BASIC_SHARED_FILES}
-	Tutorial01/Tutorial01.h
-	Tutorial01/main.cpp
-	Tutorial01/Tutorial01.cpp )
+_add_executable( "01-The_Beginning" ${ALL_BASIC_SHARED_FILES}
+	Tutorials/01/Tutorial01.h
+	Tutorials/01/main.cpp
+	Tutorials/01/Tutorial01.cpp )
 	target_link_libraries( "01-The_Beginning" ${PLATFORM_LIBRARY} )
 	set_property( TARGET "01-The_Beginning" PROPERTY FOLDER "Tutorials" )
 
-add_executable( "02" "Swapchain"
-	${ALL_BASIC_SHARED_FILES}
-	Tutorial02/Tutorial02.h
-	Tutorial02/main.cpp
-	Tutorial02/Tutorial02.cpp )
+add_executable( "Tutorials" "02" "Swapchain" ${ALL_BASIC_SHARED_FILES} )
 
-add_executable( "03" "First_Triangle"
-	${ALL_BASIC_AND_ADVANCED_SHARED_FILES}
-	Tutorial03/Tutorial03.h
-	Tutorial03/main.cpp
-	Tutorial03/Tutorial03.cpp )
+add_executable( "Tutorials" "03" "First_Triangle" ${ALL_BASIC_AND_ADVANCED_SHARED_FILES} )
 
-add_executable( "04" "Vertex_Attributes"
-	${ALL_BASIC_AND_ADVANCED_SHARED_FILES}
-	Tutorial04/Tutorial04.h
-	Tutorial04/main.cpp
-	Tutorial04/Tutorial04.cpp )
-	
-add_executable( "05" "Staging_Resources"
-	${ALL_BASIC_AND_ADVANCED_SHARED_FILES}
-	Tutorial05/Tutorial05.h
-	Tutorial05/main.cpp
-	Tutorial05/Tutorial05.cpp )
+add_executable( "Tutorials" "04" "Vertex_Attributes" ${ALL_BASIC_AND_ADVANCED_SHARED_FILES} )
 
-add_executable( "06" "Descriptor_Sets"
-	${ALL_BASIC_AND_ADVANCED_SHARED_FILES}
-	Tutorial06/Tutorial06.h
-	Tutorial06/main.cpp
-	Tutorial06/Tutorial06.cpp )
+add_executable( "Tutorials" "05" "Staging_Resources" ${ALL_BASIC_AND_ADVANCED_SHARED_FILES} )
 
-add_executable( "07" "Uniform_Buffers"
-	${ALL_BASIC_AND_ADVANCED_SHARED_FILES}
-	Tutorial07/Tutorial07.h
-	Tutorial07/main.cpp
-	Tutorial07/Tutorial07.cpp )
\ No newline at end of file
+add_executable( "Tutorials" "06" "Descriptor_Sets" ${ALL_BASIC_AND_ADVANCED_SHARED_FILES} )
+
+add_executable( "Tutorials" "07" "Uniform_Buffers" ${ALL_BASIC_AND_ADVANCED_SHARED_FILES} )
diff --git a/Project/Tutorial01/Tutorial01.cpp b/Project/Tutorials/01/Tutorial01.cpp
similarity index 100%
rename from Project/Tutorial01/Tutorial01.cpp
rename to Project/Tutorials/01/Tutorial01.cpp
diff --git a/Project/Tutorial01/Tutorial01.h b/Project/Tutorials/01/Tutorial01.h
similarity index 100%
rename from Project/Tutorial01/Tutorial01.h
rename to Project/Tutorials/01/Tutorial01.h
diff --git a/Project/Tutorial01/main.cpp b/Project/Tutorials/01/main.cpp
similarity index 100%
rename from Project/Tutorial01/main.cpp
rename to Project/Tutorials/01/main.cpp
diff --git a/Project/Tutorial02/Tutorial02.cpp b/Project/Tutorials/02/Tutorial02.cpp
similarity index 100%
rename from Project/Tutorial02/Tutorial02.cpp
rename to Project/Tutorials/02/Tutorial02.cpp
diff --git a/Project/Tutorial02/Tutorial02.h b/Project/Tutorials/02/Tutorial02.h
similarity index 100%
rename from Project/Tutorial02/Tutorial02.h
rename to Project/Tutorials/02/Tutorial02.h
diff --git a/Project/Tutorial02/main.cpp b/Project/Tutorials/02/main.cpp
similarity index 100%
rename from Project/Tutorial02/main.cpp
rename to Project/Tutorials/02/main.cpp
diff --git a/Project/Tutorial03/Data03/frag.spv b/Project/Tutorials/03/Data/frag.spv
similarity index 100%
rename from Project/Tutorial03/Data03/frag.spv
rename to Project/Tutorials/03/Data/frag.spv
diff --git a/Project/Tutorial03/Data03/frag.spv.txt b/Project/Tutorials/03/Data/frag.spv.txt
similarity index 100%
rename from Project/Tutorial03/Data03/frag.spv.txt
rename to Project/Tutorials/03/Data/frag.spv.txt
diff --git a/Project/Tutorial03/Data03/shader.frag b/Project/Tutorials/03/Data/shader.frag
similarity index 100%
rename from Project/Tutorial03/Data03/shader.frag
rename to Project/Tutorials/03/Data/shader.frag
diff --git a/Project/Tutorial03/Data03/shader.vert b/Project/Tutorials/03/Data/shader.vert
similarity index 100%
rename from Project/Tutorial03/Data03/shader.vert
rename to Project/Tutorials/03/Data/shader.vert
diff --git a/Project/Tutorial03/Data03/vert.spv b/Project/Tutorials/03/Data/vert.spv
similarity index 100%
rename from Project/Tutorial03/Data03/vert.spv
rename to Project/Tutorials/03/Data/vert.spv
diff --git a/Project/Tutorial03/Data03/vert.spv.txt b/Project/Tutorials/03/Data/vert.spv.txt
similarity index 100%
rename from Project/Tutorial03/Data03/vert.spv.txt
rename to Project/Tutorials/03/Data/vert.spv.txt
diff --git a/Project/Tutorial03/Tutorial03.cpp b/Project/Tutorials/03/Tutorial03.cpp
similarity index 99%
rename from Project/Tutorial03/Tutorial03.cpp
rename to Project/Tutorials/03/Tutorial03.cpp
index 559100d..c4b8d61 100644
--- a/Project/Tutorial03/Tutorial03.cpp
+++ b/Project/Tutorials/03/Tutorial03.cpp
@@ -149,8 +149,8 @@ namespace ApiWithoutSecrets {
   }
 
   bool Tutorial03::CreatePipeline() {
-    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> vertex_shader_module = CreateShaderModule( "Data03/vert.spv" );
-    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> fragment_shader_module = CreateShaderModule( "Data03/frag.spv" );
+    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> vertex_shader_module = CreateShaderModule( "Data/Tutorials/03/vert.spv" );
+    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> fragment_shader_module = CreateShaderModule( "Data/Tutorials/03/frag.spv" );
 
     if( !vertex_shader_module || !fragment_shader_module ) {
       return false;
diff --git a/Project/Tutorial03/Tutorial03.h b/Project/Tutorials/03/Tutorial03.h
similarity index 100%
rename from Project/Tutorial03/Tutorial03.h
rename to Project/Tutorials/03/Tutorial03.h
diff --git a/Project/Tutorial03/main.cpp b/Project/Tutorials/03/main.cpp
similarity index 100%
rename from Project/Tutorial03/main.cpp
rename to Project/Tutorials/03/main.cpp
diff --git a/Project/Tutorial04/Data04/frag.spv b/Project/Tutorials/04/Data/frag.spv
similarity index 100%
rename from Project/Tutorial04/Data04/frag.spv
rename to Project/Tutorials/04/Data/frag.spv
diff --git a/Project/Tutorial04/Data04/frag.spv.txt b/Project/Tutorials/04/Data/frag.spv.txt
similarity index 100%
rename from Project/Tutorial04/Data04/frag.spv.txt
rename to Project/Tutorials/04/Data/frag.spv.txt
diff --git a/Project/Tutorial04/Data04/shader.frag b/Project/Tutorials/04/Data/shader.frag
similarity index 100%
rename from Project/Tutorial04/Data04/shader.frag
rename to Project/Tutorials/04/Data/shader.frag
diff --git a/Project/Tutorial04/Data04/shader.vert b/Project/Tutorials/04/Data/shader.vert
similarity index 100%
rename from Project/Tutorial04/Data04/shader.vert
rename to Project/Tutorials/04/Data/shader.vert
diff --git a/Project/Tutorial04/Data04/vert.spv b/Project/Tutorials/04/Data/vert.spv
similarity index 100%
rename from Project/Tutorial04/Data04/vert.spv
rename to Project/Tutorials/04/Data/vert.spv
diff --git a/Project/Tutorial04/Data04/vert.spv.txt b/Project/Tutorials/04/Data/vert.spv.txt
similarity index 100%
rename from Project/Tutorial04/Data04/vert.spv.txt
rename to Project/Tutorials/04/Data/vert.spv.txt
diff --git a/Project/Tutorial04/Tutorial04.cpp b/Project/Tutorials/04/Tutorial04.cpp
similarity index 99%
rename from Project/Tutorial04/Tutorial04.cpp
rename to Project/Tutorials/04/Tutorial04.cpp
index 2c6c1db..a2584a8 100644
--- a/Project/Tutorial04/Tutorial04.cpp
+++ b/Project/Tutorials/04/Tutorial04.cpp
@@ -146,8 +146,8 @@ namespace ApiWithoutSecrets {
   }
 
   bool Tutorial04::CreatePipeline() {
-    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> vertex_shader_module = CreateShaderModule( "Data04/vert.spv" );
-    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> fragment_shader_module = CreateShaderModule( "Data04/frag.spv" );
+    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> vertex_shader_module = CreateShaderModule( "Data/Tutorials/04/vert.spv" );
+    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> fragment_shader_module = CreateShaderModule( "Data/Tutorials/04/frag.spv" );
 
     if( !vertex_shader_module || !fragment_shader_module ) {
       return false;
diff --git a/Project/Tutorial04/Tutorial04.h b/Project/Tutorials/04/Tutorial04.h
similarity index 100%
rename from Project/Tutorial04/Tutorial04.h
rename to Project/Tutorials/04/Tutorial04.h
diff --git a/Project/Tutorial04/main.cpp b/Project/Tutorials/04/main.cpp
similarity index 100%
rename from Project/Tutorial04/main.cpp
rename to Project/Tutorials/04/main.cpp
diff --git a/Project/Tutorial05/Data05/frag.spv b/Project/Tutorials/05/Data/frag.spv
similarity index 100%
rename from Project/Tutorial05/Data05/frag.spv
rename to Project/Tutorials/05/Data/frag.spv
diff --git a/Project/Tutorial05/Data05/frag.spv.txt b/Project/Tutorials/05/Data/frag.spv.txt
similarity index 100%
rename from Project/Tutorial05/Data05/frag.spv.txt
rename to Project/Tutorials/05/Data/frag.spv.txt
diff --git a/Project/Tutorial05/Data05/shader.frag b/Project/Tutorials/05/Data/shader.frag
similarity index 100%
rename from Project/Tutorial05/Data05/shader.frag
rename to Project/Tutorials/05/Data/shader.frag
diff --git a/Project/Tutorial05/Data05/shader.vert b/Project/Tutorials/05/Data/shader.vert
similarity index 100%
rename from Project/Tutorial05/Data05/shader.vert
rename to Project/Tutorials/05/Data/shader.vert
diff --git a/Project/Tutorial05/Data05/vert.spv b/Project/Tutorials/05/Data/vert.spv
similarity index 100%
rename from Project/Tutorial05/Data05/vert.spv
rename to Project/Tutorials/05/Data/vert.spv
diff --git a/Project/Tutorial05/Data05/vert.spv.txt b/Project/Tutorials/05/Data/vert.spv.txt
similarity index 100%
rename from Project/Tutorial05/Data05/vert.spv.txt
rename to Project/Tutorials/05/Data/vert.spv.txt
diff --git a/Project/Tutorial05/Tutorial05.cpp b/Project/Tutorials/05/Tutorial05.cpp
similarity index 99%
rename from Project/Tutorial05/Tutorial05.cpp
rename to Project/Tutorials/05/Tutorial05.cpp
index e131369..2f9e59b 100644
--- a/Project/Tutorial05/Tutorial05.cpp
+++ b/Project/Tutorials/05/Tutorial05.cpp
@@ -230,8 +230,8 @@ namespace ApiWithoutSecrets {
   }
 
   bool Tutorial05::CreatePipeline() {
-    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> vertex_shader_module = CreateShaderModule( "Data05/vert.spv" );
-    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> fragment_shader_module = CreateShaderModule( "Data05/frag.spv" );
+    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> vertex_shader_module = CreateShaderModule( "Data/Tutorials/05/vert.spv" );
+    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> fragment_shader_module = CreateShaderModule( "Data/Tutorials/05/frag.spv" );
 
     if( !vertex_shader_module || !fragment_shader_module ) {
       return false;
diff --git a/Project/Tutorial05/Tutorial05.h b/Project/Tutorials/05/Tutorial05.h
similarity index 100%
rename from Project/Tutorial05/Tutorial05.h
rename to Project/Tutorials/05/Tutorial05.h
diff --git a/Project/Tutorial05/main.cpp b/Project/Tutorials/05/main.cpp
similarity index 100%
rename from Project/Tutorial05/main.cpp
rename to Project/Tutorials/05/main.cpp
diff --git a/Project/Tutorial06/Data06/frag.spv b/Project/Tutorials/06/Data/frag.spv
similarity index 100%
rename from Project/Tutorial06/Data06/frag.spv
rename to Project/Tutorials/06/Data/frag.spv
diff --git a/Project/Tutorial06/Data06/frag.spv.txt b/Project/Tutorials/06/Data/frag.spv.txt
similarity index 100%
rename from Project/Tutorial06/Data06/frag.spv.txt
rename to Project/Tutorials/06/Data/frag.spv.txt
diff --git a/Project/Tutorial06/Data06/shader.frag b/Project/Tutorials/06/Data/shader.frag
similarity index 100%
rename from Project/Tutorial06/Data06/shader.frag
rename to Project/Tutorials/06/Data/shader.frag
diff --git a/Project/Tutorial06/Data06/shader.vert b/Project/Tutorials/06/Data/shader.vert
similarity index 100%
rename from Project/Tutorial06/Data06/shader.vert
rename to Project/Tutorials/06/Data/shader.vert
diff --git a/Project/Tutorial06/Data06/texture.png b/Project/Tutorials/06/Data/texture.png
similarity index 100%
rename from Project/Tutorial06/Data06/texture.png
rename to Project/Tutorials/06/Data/texture.png
diff --git a/Project/Tutorial06/Data06/vert.spv b/Project/Tutorials/06/Data/vert.spv
similarity index 100%
rename from Project/Tutorial06/Data06/vert.spv
rename to Project/Tutorials/06/Data/vert.spv
diff --git a/Project/Tutorial06/Data06/vert.spv.txt b/Project/Tutorials/06/Data/vert.spv.txt
similarity index 100%
rename from Project/Tutorial06/Data06/vert.spv.txt
rename to Project/Tutorials/06/Data/vert.spv.txt
diff --git a/Project/Tutorial06/Tutorial06.cpp b/Project/Tutorials/06/Tutorial06.cpp
similarity index 99%
rename from Project/Tutorial06/Tutorial06.cpp
rename to Project/Tutorials/06/Tutorial06.cpp
index ee0d284..0a99b04 100644
--- a/Project/Tutorial06/Tutorial06.cpp
+++ b/Project/Tutorials/06/Tutorial06.cpp
@@ -181,7 +181,7 @@ namespace ApiWithoutSecrets {
 
   bool Tutorial06::CreateTexture() {
     int width = 0, height = 0, data_size = 0;
-    std::vector<char> texture_data = Tools::GetImageData( "Data06/texture.png", 4, &width, &height, nullptr, &data_size );
+    std::vector<char> texture_data = Tools::GetImageData( "Data/Tutorials/06/texture.png", 4, &width, &height, nullptr, &data_size );
     if( texture_data.size() == 0 ) {
       return false;
     }
@@ -606,8 +606,8 @@ namespace ApiWithoutSecrets {
   }
 
   bool Tutorial06::CreatePipeline() {
-    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> vertex_shader_module = CreateShaderModule( "Data06/vert.spv" );
-    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> fragment_shader_module = CreateShaderModule( "Data06/frag.spv" );
+    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> vertex_shader_module = CreateShaderModule( "Data/Tutorials/06/vert.spv" );
+    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> fragment_shader_module = CreateShaderModule( "Data/Tutorials/06/frag.spv" );
 
     if( !vertex_shader_module || !fragment_shader_module ) {
       return false;
diff --git a/Project/Tutorial06/Tutorial06.h b/Project/Tutorials/06/Tutorial06.h
similarity index 100%
rename from Project/Tutorial06/Tutorial06.h
rename to Project/Tutorials/06/Tutorial06.h
diff --git a/Project/Tutorial06/main.cpp b/Project/Tutorials/06/main.cpp
similarity index 100%
rename from Project/Tutorial06/main.cpp
rename to Project/Tutorials/06/main.cpp
diff --git a/Project/Tutorial07/Data07/frag.spv b/Project/Tutorials/07/Data/frag.spv
similarity index 100%
rename from Project/Tutorial07/Data07/frag.spv
rename to Project/Tutorials/07/Data/frag.spv
diff --git a/Project/Tutorial07/Data07/frag.spv.txt b/Project/Tutorials/07/Data/frag.spv.txt
similarity index 100%
rename from Project/Tutorial07/Data07/frag.spv.txt
rename to Project/Tutorials/07/Data/frag.spv.txt
diff --git a/Project/Tutorial07/Data07/shader.frag b/Project/Tutorials/07/Data/shader.frag
similarity index 100%
rename from Project/Tutorial07/Data07/shader.frag
rename to Project/Tutorials/07/Data/shader.frag
diff --git a/Project/Tutorial07/Data07/shader.vert b/Project/Tutorials/07/Data/shader.vert
similarity index 100%
rename from Project/Tutorial07/Data07/shader.vert
rename to Project/Tutorials/07/Data/shader.vert
diff --git a/Project/Tutorial07/Data07/texture.png b/Project/Tutorials/07/Data/texture.png
similarity index 100%
rename from Project/Tutorial07/Data07/texture.png
rename to Project/Tutorials/07/Data/texture.png
diff --git a/Project/Tutorial07/Data07/vert.spv b/Project/Tutorials/07/Data/vert.spv
similarity index 100%
rename from Project/Tutorial07/Data07/vert.spv
rename to Project/Tutorials/07/Data/vert.spv
diff --git a/Project/Tutorial07/Data07/vert.spv.txt b/Project/Tutorials/07/Data/vert.spv.txt
similarity index 100%
rename from Project/Tutorial07/Data07/vert.spv.txt
rename to Project/Tutorials/07/Data/vert.spv.txt
diff --git a/Project/Tutorial07/Tutorial07.cpp b/Project/Tutorials/07/Tutorial07.cpp
similarity index 99%
rename from Project/Tutorial07/Tutorial07.cpp
rename to Project/Tutorials/07/Tutorial07.cpp
index 3cd94b7..7154776 100644
--- a/Project/Tutorial07/Tutorial07.cpp
+++ b/Project/Tutorials/07/Tutorial07.cpp
@@ -181,7 +181,7 @@ namespace ApiWithoutSecrets {
 
   bool Tutorial07::CreateTexture() {
     int width = 0, height = 0, data_size = 0;
-    std::vector<char> texture_data = Tools::GetImageData( "Data07/texture.png", 4, &width, &height, nullptr, &data_size );
+    std::vector<char> texture_data = Tools::GetImageData( "Data/Tutorials/07/texture.png", 4, &width, &height, nullptr, &data_size );
     if( texture_data.size() == 0 ) {
       return false;
     }
@@ -739,8 +739,8 @@ namespace ApiWithoutSecrets {
   }
 
   bool Tutorial07::CreatePipeline() {
-    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> vertex_shader_module = CreateShaderModule( "Data07/vert.spv" );
-    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> fragment_shader_module = CreateShaderModule( "Data07/frag.spv" );
+    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> vertex_shader_module = CreateShaderModule( "Data/Tutorials/07/vert.spv" );
+    Tools::AutoDeleter<VkShaderModule, PFN_vkDestroyShaderModule> fragment_shader_module = CreateShaderModule( "Data/Tutorials/07/frag.spv" );
 
     if( !vertex_shader_module || !fragment_shader_module ) {
       return false;
diff --git a/Project/Tutorial07/Tutorial07.h b/Project/Tutorials/07/Tutorial07.h
similarity index 100%
rename from Project/Tutorial07/Tutorial07.h
rename to Project/Tutorials/07/Tutorial07.h
diff --git a/Project/Tutorial07/main.cpp b/Project/Tutorials/07/main.cpp
similarity index 100%
rename from Project/Tutorial07/main.cpp
rename to Project/Tutorials/07/main.cpp