std::thread *threads = new std::thread[num_threads];
for (size_t i = 0; i < num_threads; i++) {
threads[i] = std::thread(ReaderWriterThread, write_percentage);
std::thread *threads = new std::thread[num_threads];
for (size_t i = 0; i < num_threads; i++) {
threads[i] = std::thread(ReaderWriterThread, write_percentage);