# JavaScript Algorithms and Data Structures Projects - Cash Register

Hello, I just want to know how can I iterate in two objects at the same time. It is just that I thought that maybe I can solve this problem by iterating two arrays (the one given at cid and one with the real denominations, meaning {‘ONE HUNDRED’: 100, …}) at the same time. Thank you.

``````function checkCashRegister(price, cash, cid) {
let change = cash - price;
let moneyChange = 0;

// copy 'cid', reverse it and transform it into an object
const reverseCid = [...cid].reverse();
const objCid = Object.fromEntries(reverseCid);

// real money in cash register with only two decimals
let sumCid = 0;
for (var i in objCid) {
sumCid += objCid[i];
}
let inRegister = Number.parseFloat(sumCid).toFixed(2);

return inRegister == change ?
{status: "CLOSED", change: cid} :
inRegister < change ?
{status: "INSUFFICIENT_FUNDS", change: []} :
inRegister > change ?
{status: "OPEN", change: 'let me think about it'} :
change;
}

console.log(checkCashRegister(19.5, 20, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]]));

/*
console.log(cid);
console.log(objCid);
console.log(inRegister);

const objCid = Object.fromEntries(cid);
https://www.javascripttutorial.net/object/convert-an-object-to-an-array-in-javascript/
*/
``````

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