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感谢您查看我的问题。

具体问题是：我在这里做错了什么，导致程序崩溃？

我正在做一个项目，该项目接受客户的订单、存储他们的个人数据并存储他们的最后一个订单。

我上了两节课。客户和订单。

客户包含一个订单数组（在对向量进行故障排除之前）。

以下是我项目中的代码。

从我的 ohistory.h 文件中：

class Order
{
public:
    Order(string* oERROR= new string(""));
    ~Order();
    bool SetOrder(const string& main, const string& drink, const string& side);
    void GetOrder() const;
    void GetError() const;
    string GetMain() const;
    string GetSide() const;
    string GetDrink() const;
private:
    string m_main;
    string m_drink;
    string m_side;
    string* mORDER_ERROR;
};


class Customer
{
public:
    Customer(string* cERROR = new string(""));
    ~Customer();
    void GetName() const;
    bool SetName(const string &fName, const string& lName);
    bool SetAddress(const string& Addr);
    bool SetPhone(const string & pNumber);
    void GetOrder(const int& numOrder) const;
    bool SetOrder(const int& numOrder);
    void GetError() const;



private:
    string m_firstName;
    string m_lastName;
    string m_Address;
    string m_phoneNumber;
    Order m_cOrder[10];
    string* pCUS_ERROR;
    Order askOrder();
};

ohistory.cpp 中的相关条目

string Order::GetMain() const
{
    string temp = m_main;
    return temp;
}

string Order::GetDrink() const
{
    string temp = m_drink;
    return temp;
}

string Order::GetSide() const
{
    string temp = m_side;
    return temp;
}

Order Customer::askOrder()
{
    string main, side, drink;

    Order newOrder;
    cout << "***\tEnter a main item: ";
    getline(cin, main);
    cout << "\n***\t\tEnter a side item: ";
    getline(cin,side);
    cout << "\n***\t\tEnter a drink: ";
    getline(cin,drink);

    newOrder.SetOrder(main, drink, side);
    return newOrder;

}

bool Customer::SetOrder(const int& numOrder)
{


    for (int i = 0; i < numOrder; ++i)
    {
        Order temp = askOrder();
        m_cOrder[i].SetOrder(temp.GetMain(), temp.GetDrink(), temp.GetSide());

    }

    return true;
}

从 main.cpp（对 customer.setOrder() 的调用在底部，main 调用 newCustomer()）

void newCustomer()
{
    cin.clear();
    char correctCustomerInfo;
    char correctOrder;
    Customer newCustomer;
    string first_name, last_name, address, phone_number;

    do
    {
        cout << "***\tEntering new customer:\n\n";
        cout << "***\t\tFirst Name:";
        getline(cin, first_name);
        cout << "***\t\tLast Name: ";
        getline(cin, last_name);
        cout << "***\t\tAddress: ";
        getline(cin, address);
        cout << "***\t\tPhone Number: ";
        getline(cin, phone_number);
        cout << endl;


        newCustomer.SetName(first_name, last_name);
        newCustomer.SetAddress(address);
        newCustomer.SetPhone(phone_number);

        newCustomer.GetName();
        correctCustomerInfo = askQuestion("Is the user's information correct?");

    } while (correctCustomerInfo != 'y');

    int choice;
    cout <<"***\tPlease enter order:\n\n";
    cout <<"***\tTotal number of Orders:\n";
    cin >> choice;
    cin.clear();
    cin.ignore(INT_MAX, '\n');

    do
    {
        newCustomer.SetOrder(choice);
        correctOrder = askQuestion("Is this the correct order?");
    } while (correctOrder != 'y');


}

运行调试时从 VC++ 转储：

'OrderTaker.exe': Loaded 'C:\Documents and Settings\*\My Documents\Visual Studio 2010\Projects\OrderTaker\Debug\OrderTaker.exe', Symbols loaded.
'OrderTaker.exe': Loaded 'C:\WINDOWS\system32\ntdll.dll', Cannot find or open the PDB file
'OrderTaker.exe': Loaded 'C:\WINDOWS\system32\kernel32.dll', Cannot find or open the PDB file
'OrderTaker.exe': Loaded 'C:\WINDOWS\system32\msvcp100d.dll', Symbols loaded.
'OrderTaker.exe': Loaded 'C:\WINDOWS\system32\msvcr100d.dll', Symbols loaded.
First-chance exception at 0x103157aa (msvcr100d.dll) in OrderTaker.exe: 0xC0000005: Access violation reading location 0xfeeefee2.
Unhandled exception at 0x103157aa (msvcr100d.dll) in OrderTaker.exe: 0xC0000005: Access violation reading location 0xfeeefee2.



pUserData   0xfeeefeee  void *
Head    0xfeeefece {pBlockHeaderNext=??? pBlockHeaderPrev=??? szFileName=??? ...}   _CrtMemBlockHeader *
pBlockHeaderNext    CXX0030: Error: expression cannot be evaluated  
pBlockHeaderPrev    CXX0030: Error: expression cannot be evaluated  
szFileName  CXX0030: Error: expression cannot be evaluated  
nLine   CXX0030: Error: expression cannot be evaluated  
nDataSize   CXX0030: Error: expression cannot be evaluated  
nBlockUse   CXX0030: Error: expression cannot be evaluated  
lRequest    CXX0030: Error: expression cannot be evaluated  
      gap   0xfeeefeea <Bad Ptr>    unsigned char [4]

[0] CXX0030: Error: expression cannot be evaluated  
[1] CXX0030: Error: expression cannot be evaluated  
[2] CXX0030: Error: expression cannot be evaluated  
[3] CXX0030: Error: expression cannot be evaluated

问题发生在：

void Customer::SetOrder(const int& numOrder)
{


    for (int i = 0; i < numOrder; ++i)
    {
        Order temp = askOrder();
        m_cOrder[i].SetOrder(temp.GetMain(), temp.GetDrink(), temp.GetSide());

    }


}

我能够输入 3 个项目，然后它崩溃了。

你可能会注意到一些奇怪的返回类型，那是我为我计划在未来做的一些步骤做准备。

提前致谢。

================================编辑

我想出了我的问题。感谢icepack 把我送到了正确的方向。

无论哪种方式，以防有人有类似的问题。

问题出在我收到的用户输入上。

int choice;
cout <<"***\tPlease enter order:\n\n";
cout <<"***\tTotal number of Orders:\n";
cin >> choice;
cin.clear();
cin.ignore(INT_MAX, '\n');

do
{
    newCustomer.SetOrder(choice);
    correctOrder = askQuestion("Is this the correct order?");
} while (correctOrder != 'y');

我没有将用户输入直接发送给类及其数据成员，而是接受输入，访问其值，然后重新为其分配相同的值。

从那里开始工作就像一个魅力。

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0 回答 0