最近在学习多线程，同样的代码，每次输出的方式和结果都不一样，不知道哪里出问题，麻烦大虾帮忙看看。
代码如下：

#include "stdafx.h"
#include <Windows.h>
#include <iostream>
using namespace std;

DWORD WINAPI Func_thread1(LPVOID lpparameter);
DWORD WINAPI Func_thread2(LPVOID lpparameter);

HANDLE tar_event;
int tickets = 100;

void main()
{
    HANDLE tar_thread1;
    tar_thread1 = CreateThread(NULL,0,Func_thread1,NULL,0,NULL);
    CloseHandle(tar_thread1);

    HANDLE tar_thread2;
    tar_thread2 = CreateThread(NULL,0,Func_thread2,NULL,0,NULL);
    CloseHandle(tar_thread2);

    tar_event = CreateEvent(NULL, FALSE,FALSE,NULL);   //自动重置事件，初始无信号；
    SetEvent(tar_event);
    CloseHandle(tar_event);

    Sleep(800);
}


DWORD WINAPI Func_thread1(LPVOID lpparameter)
{
    while(TRUE)
    {   
        WaitForSingleObject(tar_event,INFINITE);
        if (tickets >0)
        {
            Sleep(1);
            cout<<"thread 1 sell ticket :"<<tickets--<< endl;
//            printf("thread 1 sell ticket :%d \n",tickets--);
            SetEvent(tar_event);
        }
        else
        {
            SetEvent(tar_event);
            break;
        }
//        SetEvent(tar_event);
    }
    return 0;
}


DWORD WINAPI Func_thread2(LPVOID lpparameter)
{
    while(TRUE)
    {
        WaitForSingleObject(tar_event,INFINITE);
        if (tickets >0)
        {
            Sleep(1);
            cout<<"thread 2 sell ticket :"<<tickets--<<endl;
//            printf("thread 2 sell ticket :%d \n",tickets--);
            SetEvent(tar_event);
        }
        else
        {
            SetEvent(tar_event);
            break;
//        SetEvent(tar_event);
    }
    return 0;
}

        }[local]1[/local][local]2[/local][local]3[/local]

输出结果每次都不一样。不知道是为什么。

非常感谢你，新手上路。