move a + b onto the same line as return

Author: remimarcelle

Sprint-2/2-mandatory-debug/1.js

@@ -1,13 +1,27 @@
 // Predict and explain first...
 //  =============> write your prediction here
+// The output will be "The sum of 10 and 32 is undefined" because the 
+// function sum does not return the result of a + b. The return
+// statement is empty, so it returns undefined by default.
 
-function sum(a, b) {
-  return;
-  a + b;
-}
+// function sum(a, b) {
+//   return;
+//   a + b;
+// }
 
-console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
+// console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
 
 // =============> write your explanation here
+// In JS, when a function has a return statement without a value,
+// it returns undefined. The expression a+b on the next line is
+// never reached. Fix -> put a+b on the same line as return,
+// or remove the return statement and just have a+b as the last line
+// of the function.
+
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
+function sum(a, b) {
+  return a + b;
+}
+
+console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);