calcullator for minimarket using function

function calculateTotalCost(products) {
  let totalCost = 0;
  for (let i = 0; i < products.length; i++) {
    const { price, quantity } = products[i];

    
    const productCost = price * quantity;
    totalCost += productCost;
  }
  return totalCost;
}


function calculateVAT(totalCost, vatRate) {
  const vatAmount = totalCost * vatRate / 100;
  return vatAmount;
}

const numProducts = parseInt(prompt('Enter the number of products:'), 10);

const products = [];
for (let i = 0; i < numProducts; i++) {
  const productName = prompt(`Enter the name of product ${i + 1}:`);
  const productCost = parseFloat(prompt(`Enter the cost of product ${i + 1}:`));
  products.push({ name: productName, price: productCost, quantity: 1 });
}

const totalCost = calculateTotalCost(products);
const vatRate = 15;
const vatAmount = calculateVAT(totalCost, vatRate);
const totalCostIncludingVAT = totalCost + vatAmount;
alert(`Total cost: $${totalCost.toFixed(2)}\nVAT (${vatRate}%): $${vatAmount.toFixed(2)}\nTotal cost including VAT: $${totalCostIncludingVAT.toFixed(2)}`);