程序运行报错！求各位高手指点！

多线程编程代码如下：
#include <windows.h>
#include <iostream.h>DWORD WINAPI Func1Proc(                                 //线程1
LPVOID LpParameter
);
DWORD WINAPI Func2Proc(                                 //线程2
LPVOID LpParameter
);
int tickets=100;
HANDLE hMutex;
void main()                                             //主线程
{
HANDLE hThread1,hThread2;
DWORD ThreadID1,ThreadID2;
    hThread1=CreateThread(NULL,0,Func1Proc,NULL,0,&ThreadID1);
    hThread2=CreateThread(NULL,0,Func2Proc,NULL,0,&ThreadID2);
CloseHandle(hThread1);                              
    CloseHandle(hThread2); 
cout<<"main Thread is running!"<<endl;
    hMutex=CreateMutex(NULL,false,NULL);
    Sleep(4000);
//Sleep(10);                                          
}                                                       DWORD WINAPI Func1Proc(
LPVOID LpParameter
)
{

while(TRUE)
{
       WaitForSingleObject(hMutex,INFINITE);
       if(tickets>0)
      cout<<"Thread1 sells tickets:"<<tickets--<<endl;
   else
  break;
ReleaseMutex(hMutex);
} return 0;
}DWORD WINAPI Func2Proc(
LPVOID LpParameter
)
{
while(TRUE)
{
   WaitForSingleObject(hMutex,INFINITE);
       if(tickets>0)
        cout<<"Thread2 sells tickets:"<<tickets--<<endl;
       else
    break;
       ReleaseMutex(hMutex);
}
return 0;
}调试出错，不知何因，请高手赐教！
-------------------Configuration: MultiThread - Win32 Debug--------------------
Linking...
LIBCD.lib(wincrt0.obj) : error LNK2001: unresolved external symbol _WinMain@16
Debug/MultiThread.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.MultiThread.exe - 2 error(s), 0 warning(s)