Pthreads programming: Using Mutex lock and unlock mechanism for critical region

A system has two threads that access a critical region. The region consist five buffers. The first thread will lock the region and write a random number at each buffer. Also, this thread will display a message when a number is written on each buffer indicating the number of the buffer and the data written to it. The region will be unlocked by the first thread when the thread processing is completed. The second thread will then lock the critical region and read the contents of the buffers and display messages indicate the number and the content of each read buffer. Write a C++ program where the synchronization of both threads is achieved using Mutex pthread functions such as pthread_mutex_lock; pthread_mutex_unlock; etc.