How do I create a thread in C++?

How do I create a thread in C++?

You can create a thread in C++ using the <thread> library. Here's a simple example:

#include <iostream>
#include <thread>

void threadFunction() {
    std::cout << "Hello from the thread!" << std::endl;
}

int main() {
    std::thread myThread(threadFunction);
    myThread.join(); // Wait for the thread to finish
    return 0;
}

What does myThread.join() do?

myThread.join() makes the main thread wait until myThread has finished executing. It's essential to ensure that the thread completes before the program exits.

Can I create multiple threads?

Yes, you can create multiple threads by instantiating more std::thread objects. Just make sure to join each one to avoid premature termination of the program.

What happens if I forget to join a thread?

If you forget to join a thread, it will lead to a program termination error. The thread will be considered 'joinable' and must be joined or detached before the thread object is destroyed.