#include <chrono>
#include <iostream>
#include <thread>
#include <utility>

using namespace std ;

void f1(int n)
{
    for (int i = 0; i < 5; ++i)
    {
        cout << "Thread f1 executing\n";
        ++n;
        this_thread::sleep_for(chrono::milliseconds(10));
    }
}

void f2(int& n2)
{
    for (int i1 = 0; i1 < 5; ++i1)
    {
        cout << "Thread f2 executing: " << i1 << "\n";
        ++n2;
        this_thread::sleep_for(chrono::milliseconds(10));
    }
    n2 = 101 ;
}

class foo
{
public:
    void bar()
    {
        for (int i = 0; i < 5; ++i)
        {
            cout << "Thread bar executing\n";
            ++n;
            this_thread::sleep_for(chrono::milliseconds(10));
        }
    }
    int n = 0;
};

class baz
{
public:
    void operator()()
    {
        for (int i = 0; i < 5; ++i)
        {
            cout << "Thread baz executing\n";
            ++n;
            this_thread::sleep_for(chrono::milliseconds(10));
        }
    }
    int n = 0;
};



int main()
{
    int n1 = 0;
    foo f;
    baz b;
    thread t1; // t1 does not run anything
    thread t2(f1, n1 + 1); // pass by value

    //Thread 2
    thread t3(f2, ref(n1) ); // pass by reference

    this_thread::sleep_for(chrono::milliseconds(1));
    cout << "In main about to shift t3 to t4:" << endl ;
    thread t4( move(t3) );
    // t4 is now running f2(). t3 is no longer a thread

    thread t5(&foo::bar, &f);
    //executing a method in a class

    thread t6(b);
    //Executing a functor
    t2.join();
    t4.join();
    t5.join();
    t6.join();
    cout << "The value of n1: " << n1 << endl ;
}