diff --git a/qualdev/main.ts b/qualdev/main.ts
index cc6665a0c8a5f63195afb82ad07a342b142bc5f1..70419995b8ec42702242bd4f23fac7ade3b29cb0 100644
--- a/qualdev/main.ts
+++ b/qualdev/main.ts
@@ -1,14 +1,13 @@
-function deb1(): number {
-    let j = 200;
-    let tab: number[] = new Array(10); 
+function deb2(x: number, y: number): void {
+    const tmp = y;
+    y = x;
+    x = tmp;
+    console.log(x, y);
+}
 
-    for (let i = 0; i < 10; i++) {
-        j -= 10;
-        tab[i] = j; 
-    }
+let x = 10;
+let y = 20;
+deb2(x, y);
+console.log(x, y);
 
-    console.log(tab); 
-    return j;
-}
 
-console.log(deb1());