diff --git a/qualdev/TD-Debug.ts b/qualdev/TD-Debug.ts
index 822528007024f6d6bca8d28fa7fab2034871052b..89d7b696c2bb5308c2b4200103e3756998cbeeb6 100644
--- a/qualdev/TD-Debug.ts
+++ b/qualdev/TD-Debug.ts
@@ -50,9 +50,22 @@ function deb3(xy: number[]): void {
     xy = [100, 200];
   }
   
-  let xy = [10, 20];
-  deb3(xy);
-  console.log(xy);
+//let xy = [10, 20];
+//deb3(xy);
+//console.log(xy);
 
 
-  
\ No newline at end of file
+// exo 5 : etude porté de variables
+
+let j = 10;
+deb4();
+console.log(j);
+
+function deb4(): number {
+  let j = 25;
+  for (let i = 0; i < 10; i++) {
+    let j = 2 * i;
+    console.log(j);
+  }
+  return j;
+}