新浪技术面试题

用两个线程实现1-100之间数的输出

主要关键是实现线程的同步访问，程序用到了事件对象和CreateThread函数。

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#include <stdio.h> #include <windows.h>   int n=0; HANDLE hEvent;   DWORD WINAPI ThreadFunc(LPVOID lpParam) {     WaitForSingleObject(hEvent,INFINITE);//实现互斥访问     while(n<100)     {         Sleep(100);         n++;         printf("the count=%d\n",n);     }     SetEvent(hEvent);   }   DWORD WINAPI Add(LPVOID lpParam) {     WaitForSingleObject(hEvent,INFINITE);     while(n<100)     {         Sleep(100);         n++;         printf("the count=%d\n",n);     }     SetEvent(hEvent);   }   int main() {     HANDLE hThread,hThread1;     DWORD dwThreadId,dwThreadId1;       hEvent=CreateEvent(NULL,FALSE,TRUE,NULL);//创建事件对象     hThread=CreateThread(NULL,NULL,ThreadFunc,NULL,0,&dwThreadId);//创建线程     hThread1=CreateThread(NULL,NULL,Add,NULL,0,&dwThreadId1);       printf("the dwThreadId =%d\n",dwThreadId);     printf("the dwThreadId =%d\n",dwThreadId1);       WaitForSingleObject(hThread,INFINITE);     WaitForSingleObject(hThread1,INFINITE);       CloseHandle(hThread);//关闭线程句柄     CloseHandle(hThread1);     return 0; }