complete ex 2.js

Author: fatimarouchi

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

@@ -1,24 +1,43 @@
 // Predict and explain first...
 
 // Predict the output of the following code:
-// =============> Write your prediction here
+// =============> I predict the result will be wrong because the num is set set on 103.
 
-const num = 103;
+/*const num = 103;
 
 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)}`);
+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 output:
+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 problem is that the function ignores the numbers passed to it, 
+ it always uses num, which is 103, so it returns 3 every time.*/
 // Finally, correct the code to fix the problem
 // =============> write your new code here
+/*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)}`);*/
 // This program should tell the user the last digit of each number.
 // Explain why getLastDigit is not working properly - correct the problem
+// In this case getLastDigit is not working because it's parameter is empty and not declared.
+// Here's the right code:
+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)}`);