diff --git a/CMakeLists.txt b/CMakeLists.txt
index aeaf1cb..e1fd1d0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,25 +1,30 @@
 cmake_minimum_required(VERSION 3.22)
 # Global Variables
-set(TARGET_NAME cpp_insa)
+set(EXERCICE_TARGET exercice_insa)
+set(TD_TARGET td_insa)
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
 # Set the etape value
-set(ETAPE "1" CACHE STRING "Entrez un nombre d'etape a compiler.")
+set(ETAPE "1" CACHE STRING "Entrez l'exercice a compiler.")
+set(TD "1" CACHE STRING "Entrez le td a compiler.")
 
-#Setting up the sources directory
-file(GLOB SOURCES "${PROJECT_SOURCE_DIR}/src/etape${ETAPE}/*.cpp")
+# Etapes exercice
+file(GLOB SOURCES_EXE "${PROJECT_SOURCE_DIR}/exercice/etape${ETAPE}/*.cpp")
+add_executable(${EXERCICE_TARGET} ${SOURCES_EXE})
 
-# cpp_insa Project (source, header)
-add_executable(${TARGET_NAME} ${SOURCES})
-# Adding the headers
-target_include_directories(${TARGET_NAME} PUBLIC "include")
+# TD
+file(GLOB SOURCES_TD "${PROJECT_SOURCE_DIR}/td/td${TD}/src/*.cpp")
+add_executable(${TD_TARGET} ${SOURCES_TD})
+target_include_directories(${TD_TARGET} PUBLIC "${PROJECT_SOURCE_DIR}/td/td${ETAPE}/include")
 
 # Adding compilation option depending on the OS 
 if(MSVC)
-  target_compile_options(${TARGET_NAME} PUBLIC /W3 /WX /DEBUG )
+  target_compile_options(${EXERCICE_TARGET} PUBLIC /W3 /WX /DEBUG )
+  target_compile_options(${TD_TARGET} PUBLIC /W3 /WX /DEBUG )
 else()
-  target_compile_options(${TARGET_NAME} PUBLIC -Wall -Wextra -Wpedantic -Werror -lstdc++)
+  target_compile_options(${EXERCICE_TARGET} PUBLIC -Wall -Wextra -Wpedantic -Werror -lstdc++)
+  target_compile_options(${TD_TARGET} PUBLIC -Wall -Wextra -Wpedantic -Werror -lstdc++)
 endif()
 
diff --git a/README.md b/README.md
index a330412..1376731 100644
--- a/README.md
+++ b/README.md
@@ -5,24 +5,25 @@
 ### Préparer la compilation
 
 Pour compiler le projet je recommande CMake, mais il est possible d'utiliser directement 'g++'/'gcc'.
-Une simple commande vous permet de préparer les fichiers dépendant de l'étape :
+Une simple commande vous permet de préparer les fichiers dépendant de l'étape pour le td ou l'exercice :
 
 ```
 mkdir build
 cd build
 ```
 ```
-cmake -DETAPE=2 ..
+cmake -DETAPE=2 -DTD=1 ..
 ```
-_Dans cet exemple, l'étape 2 sera construite._
+_Dans cet exemple, l'étape 2 et le td 1 seront construits._
 
 ### Lancer la compilation
 
 Il suffit ensuite de construire l'executable dans le dossier désiré
 
 ```
-cmake --build .
+cmake --build . --target <target_name>
 ```
+>`<target_name>` étant soit `td_insa` ou `exercice_insa`
 
 ## Conseil pour compiler et executer efficacement
 
@@ -30,10 +31,9 @@ Je vous suggère d'aller dans le dossier contenant l'executable dès que les deu
 
 Pour cela rendez vous à la racine du projet après avoir crée et préparer le build :
 ```
-./run.sh
+./run.sh <target_name>
 ```
 _Pour GNU GCC/G++ sur Linux_
-```
-run.bat
-```
-_Pour MSVC sur Windows_
\ No newline at end of file
+>`<target_name>` étant soit `td_insa` ou `exercice_insa`
+
+_le script Windows n'est plus fonctionnel pour le moment_
\ No newline at end of file
diff --git a/src/etape1/Mon_nom.cpp b/exercice/etape1/Mon_nom.cpp
similarity index 100%
rename from src/etape1/Mon_nom.cpp
rename to exercice/etape1/Mon_nom.cpp
diff --git a/src/etape2/point2d.cpp b/exercice/etape2/point2d.cpp
similarity index 100%
rename from src/etape2/point2d.cpp
rename to exercice/etape2/point2d.cpp
diff --git a/src/etape2/point2d.h b/exercice/etape2/point2d.h
similarity index 100%
rename from src/etape2/point2d.h
rename to exercice/etape2/point2d.h
diff --git a/src/etape3/point2d.cpp b/exercice/etape3/point2d.cpp
similarity index 100%
rename from src/etape3/point2d.cpp
rename to exercice/etape3/point2d.cpp
diff --git a/src/etape3/point2d.h b/exercice/etape3/point2d.h
similarity index 100%
rename from src/etape3/point2d.h
rename to exercice/etape3/point2d.h
diff --git a/src/etape4/point2d.cpp b/exercice/etape4/point2d.cpp
similarity index 100%
rename from src/etape4/point2d.cpp
rename to exercice/etape4/point2d.cpp
diff --git a/src/etape4/point2d.h b/exercice/etape4/point2d.h
similarity index 100%
rename from src/etape4/point2d.h
rename to exercice/etape4/point2d.h
diff --git a/src/etape4/point3d.h b/exercice/etape4/point3d.h
similarity index 100%
rename from src/etape4/point3d.h
rename to exercice/etape4/point3d.h
diff --git a/src/etape5/main.cpp b/exercice/etape5/main.cpp
similarity index 100%
rename from src/etape5/main.cpp
rename to exercice/etape5/main.cpp
diff --git a/src/etape5/point2d.cpp b/exercice/etape5/point2d.cpp
similarity index 100%
rename from src/etape5/point2d.cpp
rename to exercice/etape5/point2d.cpp
diff --git a/src/etape5/point2d.h b/exercice/etape5/point2d.h
similarity index 100%
rename from src/etape5/point2d.h
rename to exercice/etape5/point2d.h
diff --git a/src/etape5/point3d.cpp b/exercice/etape5/point3d.cpp
similarity index 100%
rename from src/etape5/point3d.cpp
rename to exercice/etape5/point3d.cpp
diff --git a/src/etape5/point3d.h b/exercice/etape5/point3d.h
similarity index 100%
rename from src/etape5/point3d.h
rename to exercice/etape5/point3d.h
diff --git a/src/etape6/main.cpp b/exercice/etape6/main.cpp
similarity index 92%
rename from src/etape6/main.cpp
rename to exercice/etape6/main.cpp
index 288028e..105236f 100644
--- a/src/etape6/main.cpp
+++ b/exercice/etape6/main.cpp
@@ -12,5 +12,6 @@ int main(void)
     Point2D pointC;
     std::cin >> pointC;
     std::cout << "pointC entered: " << pointC << std::endl;
+    friendFunction(pointA);
     return 0;
 }
\ No newline at end of file
diff --git a/src/etape6/point2d.cpp b/exercice/etape6/point2d.cpp
similarity index 92%
rename from src/etape6/point2d.cpp
rename to exercice/etape6/point2d.cpp
index 60003dd..a4a412b 100644
--- a/src/etape6/point2d.cpp
+++ b/exercice/etape6/point2d.cpp
@@ -59,4 +59,9 @@ std::istream& operator>>(std::istream& stream, Point2D& point)
 Point2D operator*(int value, const Point2D& point)
 {
     return {point._x*value, point._y*value};
+}
+
+void friendFunction(Point2D& obj)
+{
+    std::cout << obj._x << std::endl;
 }
\ No newline at end of file
diff --git a/src/etape6/point2d.h b/exercice/etape6/point2d.h
similarity index 92%
rename from src/etape6/point2d.h
rename to exercice/etape6/point2d.h
index 1d42e27..66ec280 100644
--- a/src/etape6/point2d.h
+++ b/exercice/etape6/point2d.h
@@ -16,6 +16,7 @@ class Point2D {
         friend std::ostream& operator<<(std::ostream& stream, const Point2D& point);
         friend std::istream& operator>>(std::istream& stream, Point2D& point);
         friend Point2D operator*(int value, const Point2D& point);
+        friend void friendFunction(Point2D& obj);
     protected:
         float _x,_y;
 };
diff --git a/src/etape6/point3d.cpp b/exercice/etape6/point3d.cpp
similarity index 100%
rename from src/etape6/point3d.cpp
rename to exercice/etape6/point3d.cpp
diff --git a/src/etape6/point3d.h b/exercice/etape6/point3d.h
similarity index 100%
rename from src/etape6/point3d.h
rename to exercice/etape6/point3d.h
diff --git a/run.sh b/run.sh
index 31d7791..7a60910 100755
--- a/run.sh
+++ b/run.sh
@@ -1,2 +1,12 @@
-cmake --build build
-./build/cpp_insa
\ No newline at end of file
+#!/bin/bash
+
+# check target name cmake
+#return an error if not successful
+if [ $# -eq 0 ]; then
+  echo "Usage: $0 <target_name>"
+  exit 1
+fi
+
+target_name="$1"
+cmake --build build --target "$target_name"
+"./build/$target_name"
\ No newline at end of file
diff --git a/td/td1/src/main.cpp b/td/td1/src/main.cpp
new file mode 100644
index 0000000..5c0937c
--- /dev/null
+++ b/td/td1/src/main.cpp
@@ -0,0 +1,7 @@
+#include <iostream>
+
+int main(void)
+{
+    std::cout << "Hello world!" << std::endl;
+    return 0;
+}
\ No newline at end of file