Kata 11 - Change Calculator

kata11ChangeCalculator.js

const calculateChange = function(total, cash) {
  // c(hange)
  let c = {
    twentyDollar : 0,
    tenDollar : 0,
    fiveDollar : 0,
    twoDollar : 0,
    oneDollar : 0,
    quarter : 0,
    dime : 0,
    nickel : 0,
    penny : 0
  }

  // c(urrent)O(wed)
  let cO = cash - total;

  switch (true) {
    case (cO > 0) && (Math.floor(cO / 2000) !== 0):
      c.twentyDollar = Math.floor(cO / 2000);
      cO = cO - c.twentyDollar * 2000;
      console.log(cO)
    case (cO > 0) && (Math.floor(cO / 1000) !== 0):
      c.tenDollar = Math.floor(cO / 1000);
      cO = cO - c.tenDollar * 1000;
    case (cO > 0) && (Math.floor(cO / 500) !== 0):
      c.fiveDollar = Math.floor(cO / 500);
      cO = cO - c.fiveDollar * 500;
    case (cO > 0) && (Math.floor(cO / 200) !== 0):
      c.twoDollar = Math.floor(cO / 200);
      cO = cO - c.twoDollar * 200;
    case (cO > 0) && (Math.floor(cO / 100) !== 0):
      c.oneDollar = Math.floor(cO / 100);
      cO = cO - c.oneDollar * 100;
    case (cO > 0) && (Math.floor(cO / 25) !== 0):
      c.quarter = Math.floor(cO / 25);
      cO = cO - c.quarter * 25;
    case (cO > 0) && (Math.floor(cO / 10) !== 0):
      c.dime = Math.floor(cO / 10);
      cO = cO - c.dime * 10;
    case (cO > 0) && (Math.floor(cO / 5) !== 0):
      c.nickel = Math.floor(cO / 5);
      cO = cO - c.nickel * 5;
    case (cO > 0) && (Math.floor(cO / 5) !== 0):
      c.nickel = Math.floor(cO / 5);
      cO = cO - c.nickel * 5;
    default:
      c.penny = cO / 1;
      cO = cO - c.penny * 1;     
      break;
  }
  // sanitize c(hange) array
  for (let val in c) {
    c[val] === 0 && (delete c[val]);
  }
  return c;
};

console.log(calculateChange(1787, 2000));
console.log(calculateChange(2623, 4000));
console.log(calculateChange(501, 1000));

/*
valid denominations are as follows:

Twenty dollars (2000)
Ten dollars (1000)
Five dollars (500)
Two dollars (200)
One dollar (100)
Quarter (25)
Dime (10)
Nickel (5)
Penny (1)

Expected Output
{ twoDollar: 1, dime: 1, penny: 3 }
{ tenDollar: 1, twoDollar: 1, oneDollar: 1, quarter: 3, penny: 2 }
{ twoDollar: 2, quarter: 3, dime: 2, penny: 4 }
*/