Update comments in 2.js to clarify function behavior and adjusted the code accordingly

Author: Alex-Os-Dev-Lab

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

@@ -1,24 +1,34 @@
 // Predict and explain first...
 
 // Predict the output of the following code:
-// =============> 
+// =============> The const num variable is assigned in the global scope and returned in the getLastDigit function.
+// The console logs lines 14-16 call the getLastDigit function due to this; the console will log "The last digit of 42 is 3",
+// "The last digit of 105 is 3", and
+// "The last digit of 806 is 3".
 
-const num = 103;
+//const num = 103;
 
-function getLastDigit() {
+//function getLastDigit() {
+//return num.toString().slice(-1);
+//}
+
+//console.log(`The last digit of 42 is ${getLastDigit(42)}`);
+//console.log(`The last digit of 105 is ${getLastDigit(105)}`);
+//console.log(`The last digit of 806 is ${getLastDigit(806)}`);
+
+// Now run the code and compare the output to your prediction
+// =============> The code performed as expected due to the declaration of num in the global and called in the function
+// =============>
+// Finally, correct the code to fix the problem
+// =============> write your new code here
+
+function getLastDigit(num) {
   return num.toString().slice(-1);
 }
 
 console.log(`The last digit of 42 is ${getLastDigit(42)}`);
 console.log(`The last digit of 105 is ${getLastDigit(105)}`);
 console.log(`The last digit of 806 is ${getLastDigit(806)}`);
 
-// Now run the code and compare the output to your prediction
-// =============> write the output here
-// Explain why the output is the way it is
-// =============> write your explanation here
-// Finally, correct the code to fix the problem
-// =============> write your new code here
-
 // This program should tell the user the last digit of each number.
 // Explain why getLastDigit is not working properly - correct the problem