diff --git a/src/etape1/Mon_nom.cpp b/src/etape1/Mon_nom.cpp
new file mode 100644
index 0000000..85172ce
--- /dev/null
+++ b/src/etape1/Mon_nom.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+
+void maj1(int& j);
+void maj2(int* j);
+
+int main(void)
+{
+    int i(2);
+    maj1(i);
+    std::cout << i << std::endl;
+    maj2(&i);
+    std::cout << i <<std::endl;
+    return 0;
+}
+
+void maj1(int& j)
+{
+    j *= 2;
+}
+
+void maj2(int* j)
+{
+    (*j) *= 2;
+}
\ No newline at end of file