Multithreading

packaged_task.cpp

#include <iostream>
#include <future>
#include <thread>

int someTask(){
    std::cout << "Some task\n";
}

int main(){
    // Execute the task in the same thread.
    std::packaged_task<void()> task1(someTask);
    auto f1 = task1.get_future();
    task();
    int ret1 = f1.get();

    // Execute the task in a separate thread.
    std::packaged_task<void()> task2(someTask);
    auto f2 = task2.get_future();
    std::thread(task);
    int ret2 = f2.get();
}