There are two problems with the following program. The first problems that the main thread ends before the other threads get a chance to display their results. After that problem is fixed, the second problem is that we then want the threads to display their results in the order of 0-6. In other words, the output should always be: You are not permitted to change any of the existing code, you may only ADD code to fix the problem. You must use a mutex to fix the synchronization problem There are two problems with the following program. The first problems that the main thread ends before the other threads get a chance to display their results. After that problem is fixed, the second problem is that we then want the threads to display their results in the order of 0-6. In other words, the output should always be: You are not permitted to change any of the existing code, you may only ADD code to fix the problem. You must use a mutex to fix the synchronization