Fix getLastDigit function to accept a parameter and return the correct last digit

Author: Monsur0001

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

@@ -3,6 +3,10 @@
 // Predict the output of the following code:
 // =============> Write your prediction here
 
+// I predict that the output of the console.log statements will be "The last digit of 42 is 3", 
+// "The last digit of 105 is 3", and "The last digit of 806 is 3" because the getLastDigit 
+// function always returns the last digit of the number 103, which is 3.
+
 const num = 103;
 
 function getLastDigit() {
@@ -15,10 +19,25 @@ 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
+// 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
+// The getLastDigit function is not working properly because it always returns the last 
+// digit of the number 103, regardless of the input. This is because the function does not 
+// take any parameters and uses a global variable.
+
 // Finally, correct the code to fix the problem
 // =============> write your new code here
 
+function getLastDigit(num) {
+  return num.toString().slice(-1);
+}
+
 // This program should tell the user the last digit of each number.
 // Explain why getLastDigit is not working properly - correct the problem
+// The getLastDigit function is not working properly because it does not take any parameters
+// and uses a global variable. To fix the problem, we need to add a parameter to the function 
+// so that it can take in a number and return the last digit of that number.