//********************************************************
// The following code example is taken from the book
//  C++20 - The Complete Guide
//  by Nicolai M. Josuttis (www.josuttis.com)
//  http://www.cppstd20.com
//
// The code is licensed under a
//  Creative Commons Attribution 4.0 International License
//  http://creativecommons.org/licenses/by/4.0/
//********************************************************


module Mod1;         // implementation unit of module Mod1

double Customer::sumPrice() const
{
  double sum = 0.0;
  for (const Order& od : orders) {
    sum += od.count * od.price;
  }
  return sum;
}

double Customer::averagePrice() const
{
  if (orders.empty()) {
    return 0.0;
  }
  return sumPrice() / orders.size();
}