Many programming languages have provided support for concurrency today. Instead of sequentially, the computation of the code is executed during overlapping time periods in concurrent programming. It will make our program responsive since the code doesn't need to wait until all computation is finished. Let's suppose we want to develop a program that can play a video and download a huge video file at the same time. Without the concurrency technique, we have to wait for the video to be downloaded successfully before we can play another video file. By using this technique, we can split these two tasks, playing and downloading a video, then run them together concurrently.
Before C++11 was announced, the C++ programmer depended on Boost::thread to create a concurrent program using the multithreading technique. In multithreading, we split up the process into the smallest sequence and run these small processes concurrently. Now, in the C++11 library, we get the thread class to...