使用C语言编写的二分查找程序，使用pthread进行多线程处理

#include #define MAX 16 #define MAX_THREAD 4 using namespace std; //place arr, key and other variables as global to access from different thread int arr[] = { 1, 6, 8, 11, 13, 14, 15, 19, 21, 23, 26, 28, 31, 65, 108, 220 }; int key = 31; bool found = false; int part = 0; void* binary_search(void* arg) { // There are four threads, each will take 1/4th part of the list int thread_part = part++; int mid; int start = thread_part * (MAX / 4); //set start and end using the thread part int end = (thread_part + 1) * (MAX / 4); // search for the key until low < high // or key is found in any portion of array while (start key) end = mid - 1; else start = mid + 1; } } main() { pthread_t threads[MAX_THREAD]; for (int i = 0; i < MAX_THREAD; i++) pthread_create(&threads[i], NULL, binary_search, (void*)NULL); for (int i = 0; i < MAX_THREAD; i++) pthread_join(threads[i], NULL); //wait, to join with the main thread if (found) cout