recommitted all files in the mandatory-errors

Author: Mugs3

Sprint-2/2-mandatory-errors/2.js

@@ -6,5 +6,4 @@ console.log(`I was born in ${cityOfBirth}`);
 
 
 // The error is ReferenceError: Cannot access 'cityOfBirth' before initialization
-// Answer: the correct variable is not called
-// I changed the console to print the actual variable value
+// Answer: I switched the order by declaring the const first before calling /printing 

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

@@ -11,4 +11,6 @@ console.log(last4Digits)
 // Then try updating the expression last4Digits is assigned to, in order to get the correct value
 
 //Prediction was the code would run successfully without error although with the wrong results due to absence of syntax errors in the file
-// Error returned: TypeError: cardNumber.slice is not a function
+// Error returned: TypeError: cardNumber.slice is not a function
+// Lesson learnt here; slice method is only available for strings or arrays not numbers
+// So converted the cardNumber into a string first

Sprint-2/2-mandatory-errors/4.js

@@ -1,2 +1,7 @@
-const 12HourClockTime = "8:53pm";
-const 24hourClockTime = "20:53";
+const twelveHourClockTime = "8:53pm";
+const twentyFourHourClockTime = "20:53";
+console.log(twelveHourClockTime);
+console.log(twentyFourHourClockTime);
+
+// Error - SyntaxError: Invalid or unexpected token
+// lesson learnt - variables cannot start with a number