1 #include <stdio.h>
 2 #include <process.h>
 3 #include <windows.h>
 4 
 5 //線程個數
 6 const int THREAD_NUM = 3;
 7 
 8 //循環次數
 9 const int LOOP = 10;
10 
11 //互斥事件
12 HANDLE g_hThreadEvent[THREAD_NUM];//子線程同步事件
13 HANDLE g_Semaphore;               //主線程與子線程同步
14 //volatile int g_Count = 0;
15 int
 
 g_Count = 0;
16 
17 unsigned int __stdcall ThreadFunction(void *pPM)
18 {
19     int num = *(int*)pPM;
20     ReleaseSemaphore(g_Semaphore, 1, NULL); //信號量++
21 
22     for (int i = 0; i < LOOP; i++)
23     {
24         WaitForSingleObject(g_hThreadEvent[num], INFINITE);
25         //InterlockedIncrement((LPLONG)&g_Count);
 

26         g_Count++;
27 
28         printf("第%d次 線程ID:%3d,線程打印:%c\n ", g_Count, GetCurrentThreadId(), num + ‘A‘);
29 
30         SetEvent(g_hThreadEvent[(num + 1) % THREAD_NUM]);
31     }
32 
33     return 0;
34 }
35 
36 
37 int main(void)
38 {
39     int i = 0;
40     HANDLE hThreadHandle[THREAD_NUM];
 
41     g_Semaphore = CreateSemaphore(NULL, 0, 1, NULL); //當前0個資源，最大允許1個同時訪
42 
43     for (i = 0; i < THREAD_NUM; i++)
44     {
45         g_hThreadEvent[i] = CreateEvent(NULL, FALSE, FALSE, NULL);
46     }
47 
48     for (i = 0; i < THREAD_NUM; i++)
49     {
50         hThreadHandle[i] = (HANDLE)_beginthreadex(nullptr, 0, ThreadFunction, &i, 0, nullptr);
51         WaitForSingleObject(g_Semaphore, INFINITE);
52     }
53 
54     SetEvent(g_hThreadEvent[0]);
55 
56     WaitForMultipleObjects(THREAD_NUM, hThreadHandle, true, INFINITE);
57 
58     for (i = 0; i < THREAD_NUM; i++)
59     {
60         CloseHandle(hThreadHandle[i]);
61         CloseHandle(g_hThreadEvent[i]);
62     }
63 
64     CloseHandle(g_Semaphore);
65 
66     return 0;
67 }

開啟3個線程，這3個線程的ID分別為A、B、C，每個線程將自己的ID在屏幕上，要求輸出結果必須按ABC的順序顯示：ABCABC