Cash Register - question understanding

JavaScript
1

Tell us what’s happening:
Hi, can anyone explain the question? what is {status: "CLOSED", change: [...]} and {status: "OPEN", change: [...]} supposed to show or what does that mean. what I infer from the question is that:

  • here change should be: change = cash - price;

  • if there is no exact change in the cash-register-drawer(cid) return return {status: "INSUFFICIENT_FUNDS", change: []}; For example, we may have the amount but not exact coins and bills to give like we have a $5 bill only but we need to return a quarter

  • if there is no sufficient change in the cash-register-drawer(cid) return return {status: "INSUFFICIENT_FUNDS", change: []}; For example, we do not have the required change in coins and bills to give back, like we have to return $5 but we have a quarter only.

  • here status key is the status of the cash register and change key is the amount returned to the customer. So when no amount has been returned the change key is change:[] and status of the cash register is status: "INSUFFICIENT_FUNDS",

  • {status: "OPEN", change: [...]} would be returned when the cash-register-drawer(cid) possessed the exact amount of change to be returned in bills and coins. Here change would be the array of bills and coins that were returned from highest to lowest.
    For example, if the change was $1 and the cash-register-drawer(cid) had 6 quarters only, the change returned would be change: [["QUARTER",1]].
    What does OPEN represent here in this case as for the status of cid ??

  • if change = 0 would return be `{status: OPEN", change: []} ??

  • In which case should function return {status: "CLOSED", change: [...]} ?? what would be the meaning of status CLOSED for cid and what would be returned as change? Please give an example of this particular case for clarity.

Please help! please verify my understanding. Thank you in advance!

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/javascript-algorithms-and-data-structures-projects/cash-register

2

Here are the cases:

Return “Insufficient”

  • if you can’t give the exact change. e.g) The change is $3 and you only have a $5 bill.
  • if you can’t afford a change. e.g) The change is $3 and you only have $1 in the register.

Return “Closed”

  • Register is empty after giving a change. e.g) The change is $1 and you have a $1 worth of cash.
    The return value is all cash in the register just before you give the change.

(I don’t know terminologies for the real life cash registers, but “Empty” makes more sense than “Closed”.
“Closed” sounds like if the cash register is physically locked.)

Return “Open”

  • In any other cases. i.e) You can give exact change and you are still left with some cash in your register.

The case when change = 0 seems open ended; but, in this case, it should either be “Closed” or “Open” depending on the cash flow in the register because it makes sense to do so.

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3

Thank you so much for making it clear!:slightly_smiling_face: