public static void MakePayment(decimal amount, string customerName)
{
// Some validation or logic on the customer record
var customer = CustomerSystem.GetCustomer(customerName);
// Submit payment for processing
PaymentSystem.MakePayment(amount, customer);
}
public static void PurchaseItem(string customerName, string itemName, int quantity)
{
var item = InventorySystem.GetItem(itemName);
var customer = CustomerSystem.GetCustomer(customerName);
customer.ShoppingCart.Add(item, quantity);
CustomerSystem.UpdateCustomer(customer);
}
