c++ - 获取编译错误: “identifier ' objUser' is undefined” in my main() function

Question

我试图从主类中的clsFamily类调用函数，但是，当我传递(＆objUser)时，我收到一条消息，指出:

identifier 'objUser' is undefined

编辑:抱歉忘了提及，但我要根据用户的选择来操纵动态 vector 数组。

任何帮助将不胜感激，因为这是下周四xD的任务

int UserChoice();

int UserChoice()
{
 int iChoice = 0;
 int iAdults = 0;
 int iChildren = 0;

 cout << "How many family members do you have? \n";
 cin >> iChoice;

 cout << "How many of these are adults? \n";
 cin >> iAdults;

 cout << "How many of these are children? \n";
 cin >> iChildren;

 return iChoice;
 return iAdults;
 return iChildren;
}

class clsUser
 {
  private:
    string m_sName;
    int m_iAge;
  public:
    void SetName(string);
    string GetName();
    void SetAge(int);
    int GetAge();
    clsUser();
    ~clsUser();
    clsUser(string, int);
  };

//This is to group the singular users into a group using a vector
class clsFamily
{
 private:
  vector <clsUser> objUser;
  public:
  void InputFamilyDetails(vector <clsUser> *objUser);
  void OutputFamilyDetails(vector <clsUser> *objUser);
};

void clsFamily::InputFamilyDetails(vector <clsUser>* objUser)
{
 string sName = "";
 int iAge = 0;

 for (int iCount = 0; iCount < objUser->size(); iCount++)
 {
     cout << "Please enter the name of family member " << iCount + 1 << "\n";
     cin >> sName;

     cout << "Please enter the age of family member " << iCount + 1 << "\n";
     cin >> iAge;

     objUser->at(iCount).SetName(sName);
     objUser->at(iCount).SetAge(iAge);
 }
}
//This is to allow the user to input the the details of the users from the vector

void clsFamily::OutputFamilyDetails(vector <clsUser>* objUser)
{
 for (int iCount = 0; iCount < objUser->size(); iCount++)
 {
     cout << "The name of family member " << iCount + 1 << " is " << objUser->at(iCount).GetName() << " \n";
     cout << "The age of family member " << iCount + 1 << " is " << objUser->at(iCount).GetAge()<< " \n";
 }
}

int main()
{
 clsFamily objFamily;
 *//This is the area where the problem is occuring*
 objFamily.InputFamilyDetails(&objUser);
 objFamily.OutputFamilyDetails(&objUser);
}

Answer 1

clsFamily已经有一个objUser成员。您不应该使用它，并且不要在InputFamiliyDetails和OutputFamilyDetails中使用参数:

class clsFamily
{
 private:
  vector <clsUser> objUser; // Needs to be initialized with some size, though
  public:
  void InputFamilyDetails();
  void OutputFamilyDetails();
};

void clsFamily::InputFamilyDetails()
{
 string sName = "";
 int iAge = 0;

 for (int iCount = 0; iCount < objUser.size(); iCount++)
 {
     cout << "Please enter the name of family member " << iCount + 1 << "\n";
     cin >> sName;

     cout << "Please enter the age of family member " << iCount + 1 << "\n";
     cin >> iAge;

     objUser.at(iCount).SetName(sName);
     objUser.at(iCount).SetAge(iAge);
 }
}

void clsFamily::OutputFamilyDetails()
{
 for (int iCount = 0; iCount < objUser.size(); iCount++)
 {
     cout << "The name of family member " << iCount + 1 << " is " << objUser.at(iCount).GetName() << " \n";
     cout << "The age of family member " << iCount + 1 << " is " << objUser.at(iCount).GetAge()<< " \n";
 }
}

int main()
{
 clsFamily objFamily;
 objFamily.InputFamilyDetails();
 objFamily.OutputFamilyDetails();
}