如何在 struct c++ 中添加指向结构列表的指针答案

【问题标题】：How can i add a pointer to a list of struct in a struct c++如何在 struct c++ 中添加指向结构列表的指针
【发布时间】：2022-06-18 00:07:33
【问题描述】：

我有 3 个结构，第一个是可以包含 n 个第二个结构的 cashunitinfo，第二个是可以包含 n 个第三个结构的 cashunit...

结构1：

typedef struct _wfs_cdm_cu_info
{
    USHORT          usTellerID;
    USHORT          usCount;
    LPWFSCDMCASHUNIT *lppList;
} WFSCDMCUINFO, * LPWFSCDMCUINFO;

结构2：

   typedef struct _wfs_cdm_cashunit
    {
        USHORT          usNumber;
        USHORT          usType;
        LPSTR           lpszCashUnitName;
        CHAR            cUnitID[5];
        CHAR            cCurrencyID[3];
        ULONG           ulValues;
        ULONG           ulInitialCount;
        ULONG           ulCount;
        ULONG           ulRejectCount;
        ULONG           ulMinimum;
        ULONG           ulMaximum;
        BOOL            bAppLock;
        USHORT          usStatus;
        USHORT          usNumPhysicalCUs;
        LPWFSCDMPHCU   *lppPhysical;
    } WFSCDMCASHUNIT, * LPWFSCDMCASHUNIT;

结构3：

typedef struct _wfs_cdm_physicalcu
    {
        LPSTR           lpPhysicalPositionName;
        CHAR            cUnitID[5];
        ULONG           ulInitialCount;
        ULONG           ulCount;
        ULONG           ulRejectCount;
        ULONG           ulMaximum;
        USHORT          usPStatus;
        BOOL            bHardwareSensor;
    } WFSCDMPHCU, * LPWFSCDMPHCU;

我的代码是这样的：

WFSCDMCUINFO wCashUnitInfo;
LPWFSCDMCUINFO lpCashUnitInfo = NULL;

LPWFSCDMCASHUNIT lpppList = new WFSCDMCASHUNIT[6];
    
WFSCDMPHCU ppListCP1;
WFSCDMPHCU ppListCP2;

LPWFSCDMPHCU lpppListCP1 = new WFSCDMPHCU;
LPWFSCDMPHCU lpppListCP2 = new WFSCDMPHCU;

lpCashUnitInfo = &wCashUnitInfo;

lpppList[0].usNumber = 1;
lpppList[1].usNumber = 2;

ppListCP1.ulCount = 11;
ppListCP2.ulCount = 12;

lpppList[0].lppPhysical = &lpppListCP1;
lpppList[1].lppPhysical = &lpppListCP2;

wCashUnitInfo.lppList = &lpppList;
wCashUnitInfo.lppList[1] = &lpppList[1];
wCashUnitInfo.lppList[2] = &lpppList[2];

问题是我什么时候想访问：

ppListt[n]->lppPhysical[0]->ulCount)

我得到一个无效的指针异常，只适用于索引 0 有什么想法吗？

【问题讨论】：

标签： c++ cen-xfs