a. The following program pits two pthreads against each other: one thread increments the counter, while the other decrements it. Whichever thread moves the counter most wins. #include #include #include pthread mutex t mutex score PTHREAD MUTEX INITIALIZER pthread-mutex-t mutex-counter = PTH READ-MUTEX-INITIALIZER; int score - 0 int counter = 0: void *thread_func1(void *arg) while (counter #include #include pthread mutex t mutex score PTHREAD MUTEX INITIALIZER pthread-mutex-t mutex-counter = PTH READ-MUTEX-INITIALIZER; int score - 0 int counter = 0: void *thread_func1(void *arg) while (counter