利用结构体进行多线程之间传参，请问这是出现了什么问题？

// BankHandle.cpp : 定义控制台应用程序的入口点。
//
#include <stdio.h>
#include <stdlib.h>
#include <Windows.h>
#include <string>
#include <queue>
using namespace std;
#define CHAIR_NUM 5    //椅子数
#define ARRIVE_TIME 5000    //
#define CUT_TIME 5000        //办理业务时长
int num_empty_chair=CHAIR_NUM;        //等待区椅子数
HANDLE hFull=CreateSemaphore(NULL, 0,CHAIR_NUM,NULL);    //信号量
HANDLE hEmpty=CreateSemaphore(NULL, CHAIR_NUM,CHAIR_NUM,NULL);    //信号量
HANDLE hDoor= CreateEvent(NULL, TRUE,FALSE, NULL);    //开门事件，人工重置事件
//HANDLE hBaberReady= CreateEvent(NULL, FALSE,TRUE, NULL);
HANDLE hCutOver= CreateEvent(NULL, FALSE,FALSE, NULL);    //办理业务结束事件，自动重置事件
int in=-1,out=0;
int CCount=0;  //银行中的所有顾客数，包括正在办理业务的
HANDLE hChairs[CHAIR_NUM]; //事件数组，每把椅子对应一个事件

CRITICAL_SECTION cs;    //临界区

typedef struct SParam
{
    int Custid;
    string Type;
}cust,*sParam;


DWORD WINAPI SeriverWindows(LPVOID p)
{
    printf("\n广播：各位顾客久等了，现在开始为各位办理业务，请到取票台拿号！！");
    sParam sparam;
    sparam = (sParam)p;
   
    SetEvent(hDoor);  //开门
    while(true)
    {
        if(WaitForSingleObject(hFull,1)==WAIT_TIMEOUT)  //检查等候室有没有顾客
        {
            printf("\n营业员：没有顾客了，整理一下资料吧......");
            
            if(WaitForSingleObject(hFull,10000)==WAIT_TIMEOUT)
            {
                printf("\n营业员：这么长时间都没有顾客，关门了！！");
                ResetEvent(hDoor);
                return 0;
            }
        }
        else
        {
            printf("\n\n\t\t\t\t\t广播：请%d号顾客到XX号窗口办理....\n",sparam->Custid);
            SetEvent(hChairs[out]);            
            out=(out+1)%CHAIR_NUM;
        
        }
        Sleep(CUT_TIME);  //办理业务计时
        printf("\n营业员：办理完了，您看看怎么样？");
        SetEvent(hCutOver);
        WaitForSingleObject(hCutOver,INFINITE);
        printf("\n营业员：再见，欢迎再来！！");
    }
}


DWORD WINAPI Customer(LPVOID p)
{
   
    sParam sparam;
    sparam = (sParam)p;   
    int c_num;//存储要占用的椅子号
    if(WaitForSingleObject(hDoor,1)==WAIT_TIMEOUT)
    {
        printf("\n顾客%d：银行还没有开门啊，等一会吧......",sparam->Custid);
        if(WaitForSingleObject(hDoor,10000)==WAIT_TIMEOUT)
        {
            printf("\n顾客%d：：这么长时间都还不开门，明天再来吧！！", sparam->Custid);
            return 0;
        }
    }
    EnterCriticalSection(&cs);
    CCount++;    //顾客数增加
    if(CCount==1)
    {
        printf("\n顾客%d ：您好，我要办理业务......", sparam->Custid);
        ReleaseSemaphore(hFull,1,NULL);
        LeaveCriticalSection(&cs);
    }
    else
    {
        if(WaitForSingleObject(hEmpty,1)==WAIT_TIMEOUT)
        {
            printf("\n顾客%d ：好多人啊，连座位都没有，下次再来吧......",sparam->Custid);
            LeaveCriticalSection(&cs);
            return 0;
        }
        printf("\n顾客%d ：幸好还有%d个座位，等一会吧......", sparam->Custid,CHAIR_NUM+2-CCount);
        in=(in+1)%CHAIR_NUM;
        c_num=in;
        LeaveCriticalSection(&cs);
        ReleaseSemaphore(hFull,1,NULL);
        
        WaitForSingleObject(hChairs[c_num],INFINITE); //坐在椅子上等待
        
        printf("\n顾客%d ：终于轮到我了！", sparam->Custid);
        ReleaseSemaphore(hEmpty,1,NULL);
//        SetEvent(hCutOver);
    }



    printf("\n顾客%d ：开始办理业务......", sparam->Custid);
    WaitForSingleObject(hCutOver,INFINITE);

    printf("\n顾客%d：很好，谢谢，再见！", sparam->Custid);
   
    SetEvent(hCutOver);   
    EnterCriticalSection(&cs);
    CCount--;
    LeaveCriticalSection(&cs);

   
}
void main()
{
    SParam sparam;
    SParam *p;
    p = &sparam;
    InitializeCriticalSection(&cs);    //进入临界区
     for (int i = 0; i < CHAIR_NUM ; i++)
             hChairs[i] =CreateEvent(NULL,FALSE,FALSE, NULL);    //自动重置事件
     HANDLE t[11];
     t[0]=CreateThread(NULL, 0, SeriverWindows,NULL, 0, NULL );    //服务线程线程
     Sleep(2000);
     for(int i=1;i<=10;i++)
     {
         sparam.Custid = i;
         sparam.Type = "普通";
         t[i]=CreateThread(NULL, 0, Customer,(LPVOID)p,0, NULL );    //顾客来
         Sleep(2000);
     }
     WaitForMultipleObjects(11, t, TRUE, INFINITE);

    DeleteCriticalSection(&cs);

}