Open 3 threads, the IDs of these 3 threads are a, B, C, each thread will have its own ID on the screen, and the output must be displayed in the order of ABC: ABCABC

Category: Windows programming C + + 2012-10-27 15:38 3270 people read reviews (6) favorite reports The fourth question (Thunder written question): Write a program, open 3 threads, the IDs of the 3 threads are a, B, C, each thread will print its own ID on the screen 10 times, the output must be displayed in the order of ABC, such as: Abcabc .... recursion in turn. [CPP]View Plaincopy

2. #include <stdio.h>
4. #include <process.h>
6. #include <windows.h>
8. #define G_HTHREADEVENT (n) g_hthreadevent# #1
12. unsigned int __stdcall fun (void *ppm);
14. Number of threads
16. const INT thread_num = 8;
20. Number of Cycles
22. const INT LOOP = 6;
26. Mutex events
28. HANDLE G_hthreadevent[thread_num];
34. int main ()
36. {
38. printf ("\ t sub-thread loops 10 times, then the main thread loops 100 times, then goes back to the child thread loop 10 times, \ n then goes back to the main thread and loops 100 times, so loop 50 times \ n");
42. int i = 0, J;
44. HANDLE Hdl[thread_num];
50. For (i = 0; i < thread_num; i++)
52. G_hthreadevent[i] = CreateEvent (null,false,false,null);
56. //The thread number is passed in as a thread parameter, first converted to a pointer, then converted to shaping,
58. For (i = 0; i < thread_num; i++)
60. Hdl[i] = (HANDLE) _beginthreadex (Null,0,fun, (void*) i,0,null);
66. SetEvent (G_hthreadevent[0]);
72. WaitForMultipleObjects (Thread_num,hdl,true,infinite);
76. For (i = 0; i < thread_num; i++)
78. {
80. CloseHandle (Hdl[i]);
82. CloseHandle (G_hthreadevent[i]);
84. }
88. return 0;
90. }
94. unsigned int __stdcall fun (void *ppm)
96. {
98. int num = (int) PPM;
100. int i = 0;
104. For (i = 0; i< loop;i++)
106. {
108. WaitForSingleObject (G_hthreadevent[num],infinite);
112. //printf ("Thread id=%d, thread number is%c,%d \ n", GetCurrentThreadID (), num+ ' A ');
114. printf ("%c", num+' A ');
118. if (num+1 = = thread_num)
120. printf ("\ n");
124. SetEvent (g_hthreadevent[(num+1)%thread_num]);
126. }
128. return 0;
130. }

Open 3 threads, the IDs of these 3 threads are a, B, C, each thread will have its own ID on the screen, and the output must be displayed in the order of ABC: ABCABC