modules/mod1/mod1price.cpp

The following code example is taken from the book
C++20 - The Complete Guide by Nicolai M. Josuttis, Leanpub, 2021
The code is licensed under a Creative Commons Attribution 4.0 International License.

---

// raw code

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();
}