diff --git a/qualdev/Td_debug/exercice.ts b/qualdev/Td_debug/exercice.ts
index 8163db18a5e7789f0a82ede904426f502cb8924d..a722789f03a2ad16d20730e6d197417553dec07c 100644
--- a/qualdev/Td_debug/exercice.ts
+++ b/qualdev/Td_debug/exercice.ts
@@ -41,4 +41,15 @@ function deb4(xy: number[]): void {
 }
 let xy = [10, 20];
 deb4(xy);
-console.log(xy);
\ No newline at end of file
+console.log(xy);
+
+// exercice5
+function deb5(): number {
+    let j = 25;
+    for (let i = 0; i < 10; i++) {
+        let j = 2 * i;
+        console.log(j);
+    }
+    return j;
+}
+console.log(deb5());
\ No newline at end of file