lib/concstream.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

#include <iostream>
#include <cmath>
#include <thread>

void squareRoots(int num)
{
  for (int i = 0; i < num ; ++i) {
    std::cout << "squareroot of " << i << " is "
              << std::sqrt(i) << '\n';
  }
}

int main()
{
  std::jthread t1(squareRoots, 5);
  std::jthread t2(squareRoots, 5);
  std::jthread t3(squareRoots, 5);
}