Windows API 多线程问题

#include <windows.h>
#include <IOSTREAM.H>

DWORD WINAPI FuncProc1(    LPVOID lpParameter//thread data
);

int index = 0;

int main()
{
    HANDLE hThread1;
    hThread1 = CreateThread(NULL,
        0,
        FuncProc1,
        NULL,
        0,
        NULL);

    CloseHandle(hThread1);
    while (index++ < 1000)
    {
        cout << "main thread is running" << endl;
    }    
    
    return 0 ;
}

DWORD WINAPI FuncProc1(LPVOID lpParameter //thread data
                       )
{
    while(index++ < 1000)
    {
        cout << "thread1 is running" << endl;
    }

    return 0;

};