VC++ 获得多个线程的退出码，比如启动线程一之后，系统会自动给该线程分配一个识别码，本程序就是获得这个识别码，一共有两个示例，完成的功能是一样的 -VC++ code to obtain the withdrawal of multiple threads, such as starting a thread, the system will automatically assign an identification to the thread code, the program is