modules/mod3/mod3io.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. Creative Commons License

// raw code

module;              // start module unit with global module fragment

#include <iostream>
#include <vector>
#include <format>

module Mod3;         // implementation unit of module Mod3

import :Order;       // import internal partition to use Order

void Customer::print() const
{
  // print name:
  std::cout << name << ":\n";
  // print order entries:
  for (const Order& od : orders) {
    std::cout << std::format("{:3} {:14} {:6.2f} {:6.2f}\n",
                             od.count, od.name, od.price, od.count * od.price);             
  }
  // print sum:
  std::cout << std::format("{:25} ------\n", ' ');
  std::cout << std::format("{:25} {:6.2f}\n", "    Sum:", sumPrice());
}