2-mandatory-debug sprint3 completed

Author: bartoszkawiak

Sprint-3/2-mandatory-debug/0.js

@@ -1,14 +1,24 @@
 // Predict and explain first...
 
-// =============> write your prediction here
+// =============> We will log the result in a console but function won't return it as a value.
+// console.log only displays the result, it does not return it from the function.
 
+/*
 function multiply(a, b) {
   console.log(a * b);
 }
+  console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
+*/
 
-console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
 
 // =============> write your explanation here
 
+//We need to return a * b so the result can be used where the function is called.
+
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
+function multiply(a, b) {
+  return a * b;
+}
+
+console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);

Sprint-3/2-mandatory-debug/1.js

@@ -1,13 +1,20 @@
 // Predict and explain first...
-//  =============> write your prediction here
-
+//  =============> return on its own means that the function ends without returning a value, so the result is undefined.
+/*
 function sum(a, b) {
   return;
   a + b;
 }
 
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
+*/
 
 // =============> write your explanation here
+// return on it's own means that the function wont refer to parameters and will come up as undefined. a+ b is never reached because it comes after return.
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
+function sum(a, b) {
+  return a + b
+};
+
+console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);

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

@@ -1,8 +1,11 @@
 // Predict and explain first...
 
 // Predict the output of the following code:
-// =============> Write your prediction here
+// =============> The last digit of 42 is 3
+// The last digit of 105 is 3
+// The last digit of 806 is 3
 
+/*
 const num = 103;
 
 function getLastDigit() {
@@ -12,13 +15,31 @@ function getLastDigit() {
 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
+/*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 output is this way as there is a num assigned before the function and function don't use the parameter num,
+//so the output would only be the return of slice value for const num before the function.
+
 // Finally, correct the code to fix the problem
 // =============> write your new code here
+const num = 103;
+
+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)}`);
 
 // This program should tell the user the last digit of each number.
 // Explain why getLastDigit is not working properly - correct the problem
+//Function was not working correctly as it was returning num slice for const num that was assigned before the function, function should use parameter num to work correctly.