Fixed shadowing issue and added corrected code

Author: lamlakamana-oss

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

@@ -5,7 +5,7 @@
 // I predict every line will say the last digit is 3, because the function
 // ignores the number I pass in and always uses num = 103.
 
-const num = 103;
+
 
 function getLastDigit(num) {
   return num.toString().slice(-1);
@@ -22,12 +22,16 @@ console.log(`The last digit of 806 is ${getLastDigit(806)}`);
 // The last digit of 806 is 3
 // Explain why the output is the way it is
 // =============> write your explanation here
-// getLastDigit has no parameter, so the argument in getLastDigit(42) is
-// ignored. Inside the function, num refers to the global constant
-// num = 103, so it always returns "3".
+// This is called shadowing. Originally, getLastDigit had no parameter, so 
+// the argument (e.g., 42) was ignored. Inside the function, 'num' referred to 
+// the global constant 'num = 103', which is why it always returned "3".
 // Finally, correct the code to fix the problem
 // =============> write your new code here
 // I added num as a parameter: function getLastDigit(num). Now num is the
 // value I pass in, not the global num = 103.
 // This program should tell the user the last digit of each number.
 // Explain why getLastDigit is not working properly - correct the problem
+
+console.log(getLastDigit(42));
+console.log(getLastDigit(105));
+console.log(getLastDigit(806));