- Fix sum function to return correct value and update predictions and explanations

- Move expression a + b onto the same line as return keyword
- Prevent the function from returning undefined on a newline

Author: rahanasuleiman8-ship-it

Sprint-3/2-mandatory-debug/1.js

@@ -1,13 +1,26 @@
 // Predict and explain first...
 //  =============> write your prediction here
 
-function sum(a, b) {
-  return;
-  a + b;
-}
+// =============> Prediction: Calling sum(10, 32) will return 'undefined', so the console will output "The sum of 10 and 32 is undefined". This is because 'return;' terminates the statement immediately, leaving 'a + b;' as unreachable code.
+
+//  =============> Prediction: The function will evaluate to 'The sum of 10 and 32 is undefined' because there is a semi-colon at the end of the return which ends the statement immediately, leaving 'a + b' with no way of reaching the return statement.
 
-console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
+// function sum(a, b) {
+//   return;
+//   a + b;
+// }
+
+// console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
 
 // =============> write your explanation here
+
+// =============> Explanation: When I run 'console.log(`The sum of 10 and 32 is ${sum(10, 32)}`)', I got this in my terminal 'The sum of 10 and 32 is undefined' because in JavaScript having a semi-colon at the end of a value tells the computer that this statement has ended, treating a + b; as a separate, un-returned statement. To fix this, the expression 'a + b' must sit on the exact same line as 'return'.
+
 // 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)}`); // output The sum of 10 and 32 is 42