错误：无效使用非静态数据成员'Application :: ApplicationConstructor'

Question

我有这个：

#ifndef APPLICATION_H
#define APPLICATION_H
#include "UserOpinion.h"
#include "ApplicationConstructor.h"
#include <vector>

using namespace std;

class Application{  
public:
  Application(char *, string, string, ApplicationConstructor &, float); //Application's Constructor
  Application(const Application &); //Copy Constructor
  virtual void ShowData() const = 0; //Virtual ShowData() Method)
  virtual ~Application(); //Destructor  
  bool operator== (const Application &) const; //Overload the == operator, this case overloads and the case of != operator
  vector<ApplicationConstructor> getApplicationConstructorVector(); //Get the Application Constructor Vector
  vector<UserOpinion> getUserOpinionVector(); //Get the User Opinion Vector       
  void setApplicationConstructorVector(vector<ApplicationConstructor> &); //Set the Application Constructor Vector
  void setUserOpinionVector(vector<UserOpinion> &); //Set the User Opinion Vector

protected:
   char *ApplicationCode;
   string ApplicationName;
   string ApplicationVersion; 
   float Price;
   ApplicationConstructor &ApplicationConstructor;
   UserOpinion *UserView;
   vector<ApplicationConstructor> &ApplicationConstructorVector; // Vector with Application Constructor Objects
   vector<UserOpinion> &UserOpinionVector; // Vector pointer to User Opinion Objects
};

#endif /* APPLICATION_H */

还有这个：

#ifndef APPLICATIONCONSTRUCTOR_H
#define APPLICATIONCONSTRUCTOR_H
#include <iostream>
#include <string>
#include <string.h>

using namespace std;

class ApplicationConstructor{       
private:
    string ConstructorCode;  //Constructor's code
    char  *ConstructorName;  //Constructor's name
    string ConstructorEmail; //Constructor's email
public:
    ApplicationConstructor(string, char *, string);  //Constructor
    ApplicationConstructor(const ApplicationConstructor&);  //Copy constructor
    void setConstructorCode(string);  //Set the constructor's code
    void setConstructorName(char *);  //Set the constructor's name
    void setConstructorEmail(string);  //Set the constructor's email
    string getConstructorCode();  //Get the constructor's code
    string getConstructorEmail();  //Get the constructor's email
    char *getConstructorName();  //Get the constructor's name
    bool operator== (const ApplicationConstructor &) const; //Overloading the == operator for the ApplicationConstructor class
    bool operator= (const ApplicationConstructor &); //Overloading the = operator for the ApplicationConstructor class
    void showData(); //Show the Application Constructor Data Method
    virtual ~ApplicationConstructor();  //Destructor 
};

#endif /* APPLICATIONCONSTRUCTOR_H */

我得到以下信息：

In file included from Application.cpp:8:0:
Application.h:55:15: error: invalid use of non-static data member 'Application::ApplicationConstructor'
        vector<ApplicationConstructor> &ApplicationConstructorVector; // Vector with Application Constructor Objects
               ^~~~~~~~~~~~~~~~~~~~~~
Application.h:53:32: note: declared here
        ApplicationConstructor &ApplicationConstructor;
                                ^~~~~~~~~~~~~~~~~~~~~~
Application.h:55:15: error: invalid use of non-static data member 'Application::ApplicationConstructor'
        vector<ApplicationConstructor> &ApplicationConstructorVector; // Vector with Application Constructor Objects
               ^~~~~~~~~~~~~~~~~~~~~~
Application.h:53:32: note: declared here
        ApplicationConstructor &ApplicationConstructor;
                                ^~~~~~~~~~~~~~~~~~~~~~
Application.h:55:15: error: invalid use of non-static data member 'Application::ApplicationConstructor'
        vector<ApplicationConstructor> &ApplicationConstructorVector; // Vector with Application Constructor Objects
               ^~~~~~~~~~~~~~~~~~~~~~
Application.h:53:32: note: declared here
        ApplicationConstructor &ApplicationConstructor;

有任何建议吗？该程序运行得很好。.我认为const值正在发生某些事情，它在Application.h的第一行和vector处标记为红色。请提出任何建议？

Answer 1

似乎不是将数据成员声明为引用，例如这样

vector<UserOpinion> &UserOpinionVector; // Vector pointer to User Opinion Objects

您的意思是指针的声明，例如

vector<UserOpinion> *UserOpinionVector; // Vector pointer to User Opinion Objects