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http://blog.csdn.net/riyuedangkong1/article/details/52462057

1. #include<iostream>  
2. #include<Windows.h>  
3. using namespace std;  
4. int tickets=100;         //火车票总数  
5. HANDLE hSemaphore;  
6. DWORD WINAPI Thread1Proc(LPVOID lpParameter);//进程函数  
7. DWORD WINAPI Thread2Proc(LPVOID lpParameter);//进程函数  
8. void main()  
9. {  
10.     HANDLE hThread1;  
11.     HANDLE hThread2;  
12.     hThread1=CreateThread(NULL,0,Thread1Proc,NULL,0,NULL);   //创建线程  
13.     hThread2=CreateThread(NULL,0,Thread2Proc,NULL,0,NULL);  
14.     hSemaphore=CreateSemaphore(NULL,1,1,NULL);      //创建信号量，初始为1，最多为1  
15.     CloseHandle(hThread1);       //释放句柄  
16.     CloseHandle(hThread2);  
17.     CloseHandle(hSemaphore);  
18.     while(TRUE)  
19.     {  
20.         WaitForSingleObject(hSemaphore,INFINITE);  
21.         if(tickets>0)  
22.         {  
23.             cout<<"主线程卖出第"<<tickets--<<"张票"<<endl;  
24.             Sleep(50);  
25.             ReleaseSemaphore(hSemaphore,1,NULL);  
26.         }  
27.         else  
28.         {  
29.             ReleaseSemaphore(hSemaphore,1,NULL);      //释放信号量资源  
30.             break;  
31.         }  
32.     }  
33.     ExitThread(0);  
34. }  
35. DWORD WINAPI Thread1Proc(LPVOID lpParameter)  
36. {  
37.     while(TRUE)  
38.     {  
39.         WaitForSingleObject(hSemaphore,INFINITE);//申请信号量  
40.         if(tickets>0)  
41.         {  
42.            cout<<"线程一卖掉第"<<tickets--<<"张票"<<endl;  
43.            Sleep(50);  
44.            ReleaseSemaphore(hSemaphore,1,NULL);  
45.         }  
46.         else  
47.         {  
48.             ReleaseSemaphore(hSemaphore,1,NULL);  
49.             break;  
50.         }  
51.     }  
52.     return 0;  
53. }  
54. DWORD WINAPI Thread2Proc(LPVOID lpParameter)  
55. {  
56.     while(TRUE)  
57.     {  
58.         WaitForSingleObject(hSemaphore,INFINITE);  
59.         if(tickets>0)  
60.         {  
61.             cout<<"线程二卖出第"<<tickets--<<"张票"<<endl;  
62.             Sleep(50);  
63.             ReleaseSemaphore(hSemaphore,1,NULL);  
64.         }  
65.         else  
66.         {  
67.             ReleaseSemaphore(hSemaphore,1,NULL);  
68.             break;  
69.         }  
70.     }  
71.     return 0;  
72. }