#include "stdafx.h"
#include "conio.h"
#include "stdlib.h"
#include "string.h"
#include "windows.h"
#include "stdio.h"
#include <time.h>
#include <process.h>
unsigned Counter;
unsigned __stdcall SecondThreadFunc( void* pArguments )
{    printf( "In second thread...\n" );   
     while ( Counter < 1000000 )        
 Counter++;   
     _endthreadex( 0 );   
     return 0;}


void main()
{  HANDLE hThread;   
   unsigned threadID;   
   printf( "Creating second thread...\n" );    // Create the second thread.   
   hThread = (HANDLE)_beginthreadex( NULL, 0, &SecondThreadFunc, NULL, 0, &threadID );   
   // Wait until second thread terminates. If you comment out the line   
// below, Counter will not be correct because the thread has not   
// terminated, and Counter most likely has not been incremented to   
// 1000000 yet.   
   WaitForSingleObject( hThread, INFINITE );   
   printf( "Counter should be 1000000; it is-> %d\n", Counter );    // Destroy the thread object.  
   CloseHandle( hThread );

}
为什么编译不能通过？提示D:\App_PC\12\12.cpp(17) : error C2065: '_endthreadex' : undeclared identifier
D:\App_PC\12\12.cpp(25) : error C2065: '_beginthreadex' : undeclared identifier
Error executing cl.exe.

12.exe - 2 error(s), 0 warning(s)
可是我不是已经包含process.h了么？怎么回事？