Write a multithreaded program that implements the banker's algorithm discussed in Section 7.5.3. Create n threads that request and release resources from the bank. The banker will grant the request only if it leaves the system in a safe state. You may write this program using either Pthreads or Win32 threads. It is important that shared data be safe from concurrent access. To ensure safe access to shared data, you can use mutex locks, which are available in both the Pthreads and Win32 APis. The use of mutex locks in both of these libraries is described in the project entitled "Producer-Consumer Problem" at the end of Chapter 6.