Correct getLastDigit function implementation

Fixed getLastDigit function to return the correct last digit for integers.

Author: cywong-dev

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

@@ -13,12 +13,30 @@ 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)}`);
 
+// [ChunYanWong] No parameter included in the function and hence the same output
+
 // Now run the code and compare the output to your prediction
 // =============> write the output here
+
+// [ChunYanWong] 
+//The last digit of 42 is 3
+//The last digit of 105 is 3
+//The last digit of 806 is 3
+
 // Explain why the output is the way it is
 // =============> write your explanation here
+
+// [ChunYanWong] No parameter included in the function
+
 // Finally, correct the code to fix the problem
 // =============> write your new code here
+// [ChunYanWong] function getLastDigit(num) {
+//  ...
 
 // This program should tell the user the last digit of each number.
 // Explain why getLastDigit is not working properly - correct the problem
+// [ChunYanWong] for the case 12.34, it will return 4 instead of the digit 2
+// [ChunYanWong] function getLastDigit(num) {
+//       return Math.abs(Math.trunc(num)) % 10;
+//     }
+