#include <iostream>
#include <process.h>
#include <windows.h>
#include <string>
using std::cout;
using std::endl;
using std::string;const int num=2;
int count;
HANDLE _Semaphore;
unsigned __stdcall ThreadFun(void* par);int main()
{count=0;HANDLE handles[num];//创建一个初始资源0，最大并发1的信号量_Semaphore=CreateSemaphore(NULL,0,1,NULL);for(int i=0;i<num;++i){handles[i]=(HANDLE)_beginthreadex(NULL,0,ThreadFun,NULL,0,0);//等待信号量可用资源数大于0(资源数大于0表示信号量处于触发状态)
        WaitForSingleObject(_Semaphore,INFINITE);}//等待所有线程执行完毕
    WaitForMultipleObjects(num,handles,TRUE,INFINITE);for(int i=0;i<num;++i)CloseHandle(handles[i]);//关系信号量
    CloseHandle(_Semaphore);system("PAUSE");return 0;
}
unsigned __stdcall ThreadFun(void* par)
{for(int i=0;i<10;++i)cout<<"cout:"<<++count<<endl;count=0;//释放一个资源，让信号量的资源数加1(注意:这里输出可能乱，只是为了观察ReleaseSemaphore结果)cout<<"ReleaseSemaphore:"<<ReleaseSemaphore(_Semaphore,1,NULL)<<endl;return 0;
}

#include <iostream>
#include <process.h>
#include <windows.h>
#include <string>
using std::cout;
using std::endl;
using std::string;const int num=3;
int count;
HANDLE _Semaphore;
unsigned __stdcall ThreadFun(void* par);int main()
{count=0;HANDLE handles[num];//创建一个初始资源0，最大并发1的信号量_Semaphore=CreateSemaphore(NULL,0,3,NULL);for(int i=0;i<num;++i){handles[i]=(HANDLE)_beginthreadex(NULL,0,ThreadFun,NULL,0,0);//等待信号量可用资源数大于0(资源数大于0表示信号量处于触发状态)
        WaitForSingleObject(_Semaphore,INFINITE);}//等待所有线程执行完毕
    WaitForMultipleObjects(num,handles,TRUE,INFINITE);for(int i=0;i<num;++i)CloseHandle(handles[i]);//关系信号量
    CloseHandle(_Semaphore);system("PAUSE");return 0;
}
unsigned __stdcall ThreadFun(void* par)
{for(int i=0;i<10;++i)cout<<"cout:"<<++count<<endl;count=0;//释放一个资源，让信号量的资源数加1(注意:这里输出可能乱，只是为了观察ReleaseSemaphore结果)cout<<"ReleaseSemaphore:"<<ReleaseSemaphore(_Semaphore,2,NULL)<<endl;return 0;
}