Sprint 1 coursework 2.2 and 2.3

Author: kohanman

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

@@ -1,9 +1,14 @@
 const cardNumber = 4533787178994213;
-const last4Digits = cardNumber.slice(-4);
+const last4Digits = String(cardNumber).slice(-4);
 
 // The last4Digits variable should store the last 4 digits of cardNumber
 // However, the code isn't working
 // Before running the code, make and explain a prediction about why the code won't work
 // Then run the code and see what error it gives.
 // Consider: Why does it give this error? Is this what I predicted? If not, what's different?
 // Then try updating the expression last4Digits is assigned to, in order to get the correct value
+
+// i think the error will be that the slice method works for strings not numbers
+//this code gives TypeError: cardNumber.slice is not a function, this is probably because of the issue i predicted
+//but I don't know for sure base on the error code
+//i will change the cardnumber into a string using String() in the last4Digits expression