diff --git a/exo3.ts b/exo3.ts
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..1c0a8936d1fdcf776b95d8801e56fb2731a66789 100644
--- a/exo3.ts
+++ b/exo3.ts
@@ -0,0 +1,11 @@
+function deb2(x: number, y:number): void {
+    const tmp = y;
+    y = x;
+    x = tmp;
+    console.log(x, y);
+}
+
+let x = 10;
+let y = 20;
+deb2(x, y);
+console.log(x, y);