关于delete问题

struct sBaseCmd
{
    unsigned char  PriCmd;
    unsigned char  SubCmd;
};

struct sLoginInfo
{
    struct     sBaseCmd baseCmd;
    char     szLocalIP[20];
    long     loginID;
};

void Func()
{
    struct sLoginInfo* pInfo = new struct sLoginInfo;
    memset(pInfo, 0, sizeof(struct sLoginInfo));
    memcpy(pInfo->szLocalIP, "192.168.1.107", strlen("192.168.1.107"));
    struct sBaseCmd* pCmd = (struct sBaseCmd*)pInfo;
        ...............................................
    delete pCmd;
    pCmd= NULL;
}