C++17 STL Cookbook

How to do it...

In this section, we are going to implement a program just like in the recipe before, but this time with multiple producers and multiple consumers:

1. First, we need to include all needed headers and we declare that we use namespace std and chrono_literals:

      #include <iostream>      #include <iomanip>      #include <sstream>      #include <vector>      #include <queue>      #include <thread>      #include <mutex>      #include <condition_variable>      #include <chrono>           using namespace std;      using namespace chrono_literals;

2. Then we implement the synchronized printing helper from the other recipe in this chapter because we are going to do a lot of concurrent printing:

      struct pcout : public stringstream {          static inline mutex cout_mutex;          ~pcout() { lock_guard<mutex> ...