类没有命名的成员

Class '' has no member named ''

本文关键字:成员      更新时间:2023-10-16

我已经创建了几个带有关联标头和声明/定义函数的源文件。 我不断收到一个错误,说一个类没有成员。 我正在调用一个 set 函数,该函数清楚地将成员与我的私有成员相关联。 还有什么我应该包括的吗?

#ifndef STUDENTCOLLECTION_H
#define STUDENTCOLLECTION_H
#include<string>
#include<vector>
#include<iostream>
#include<fstream>
using namespace std;
#include "StudentProfile.h"
#include "Person.h"
#include "Student.h"
#include "Course.h"
class StudentCollection
{
 private:
  vector<StudentProfile> StCollection;
 public:
  void GetInfo();
  void PrintCollection();
  StudentCollection(){};
  StudentCollection(vector<StudentProfile> StCollection){};
};
#endif

它是.cpp文件:

#ifndef STUDENTCOLLECTION_CPP
#define STUDENTCOLLECTION_CPP
#include<iostream>
#include<fstream>
#include<vector>
using namespace std;
#include "StudentCollection.h"
#include "StudentProfile.h"
#include "Student.h"
#include "Person.h"
#include "Course.h"
void StudentCollection::GetInfo()
{
  long SN;
  string first;
  string last;
  string a;
  char sex;
  long ID;
  Course Class1;
  Course Class2;
  Course Class3;
  long num;
  string name;
  Person PInfo;
  Student SInfo;
  ifstream fin;
  fin.open("info.txt");
  fin >> first >> last >> SN >> a >> sex >> ID >> SInfo.Class1.num >> SInfo.Class1.name >> SInfo.Class2.num >> SInfo.Class2.name >> SInfo.Class3.num >> SInfo.Class3.
name;
while (!fin.eof())
  {
    StudentProfile New_Stu;
    New_Stu.SetAStudentProfile(PInfo, SInfo);
    New_Stu.PInfo.SetSetAPerson(SN, first, last, a, sex);
    New_Stu.SInfo.SetAStudent(ID, Class1, Class2, Class3);
    New_Stu.SInfo.SetACourse(num, name);
    StCollection.push_back(New_Stu);
    fin >> first >> last >> SN >> a >> sex >> ID >> SInfo.Class1.num >> SInfo.Class1.name >> SInfo.Class2.num >> SInfo.Class2.name >> SInfo.Class3.num >> SInfo.Class3.
name;
  }
 fin.close();
}
void StudentCollection::PrintCollection()
{
}
#endif

学生档案.h 文件:

#ifndef STUDENTPROFILE_H
#define STUDENTPROFILE_H
using namespace std;
#include "Person.h"
#include "Student.h"
class StudentProfile
{
 private:
  Person PersonalInfo;
  Student StdInfo;
 public:
  void SetAStudentProfile(Person PInfo, Student SInfo);
  void PrintAStudentProfile();
  StudentProfile(){};
  StudentProfile(Person PInfo, Student SInfo){};
};
#endif

学生档案.cpp:

#ifndef STUDENTPROFILE_CPP
#define STUDENTPROFILE_CPP
#include<iostream>
using namespace std;
#include "StudentProfile.h"
void StudentProfile::SetAStudentProfile(Person PInfo, Student SInfo)
{
  PersonalInfo = PInfo;
  StdInfo = SInfo;
}
void StudentProfile::PrintAStudentProfile()
{
}
#endif

这是我编辑的错误(我在其他地方的对象有另一个问题,但我确定原因是一样的):

StudentCollection.cpp:43: error: ‘class StudentProfile’ has no member named ‘PInfo’
StudentCollection.cpp:44: error: ‘class StudentProfile’ has no member named ‘SInfo’
StudentCollection.cpp:45: error: ‘class StudentProfile’ has no member named ‘SInfo’

这些行:

StudentProfile New_Stu;
New_Stu.SetAStudentProfile(PInfo, SInfo);
New_Stu.PInfo.SetSetAPerson(SN, first, last, a, sex);
New_Stu.SInfo.SetAStudent(ID, Class1, Class2, Class3);
New_Stu.SInfo.SetACourse(num, name);

应该是:

StudentProfile New_Stu;
New_Stu.SetAStudentProfile(PInfo, SInfo);
New_Stu.PersonalInfo.SetSetAPerson(SN, first, last, a, sex);
New_Stu.StdInfo.SetAStudent(ID, Class1, Class2, Class3);
New_Stu.StdInfo.SetACourse(num, name);

但是,您可能还需要将这些成员的访问修饰符更改为public因为这是类StudentCollection中的代码。 或者,您可以在StudentProfile中创建一些额外的资源库,这样您就不需要尝试从外部访问PersonalInfoStdInfo成员。

你有

这些行:

New_Stu.PInfo.SetSetAPerson(SN, first, last, a, sex);
New_Stu.SInfo.SetAStudent(ID, Class1, Class2, Class3);
New_Stu.SInfo.SetACourse(num, name);

它试图访问New_Stu.PInfoNew_Stu.SInfo,两者都没有被定义为StudentProfile类的一部分。 您PInfoSInfo定义为GetInfo()方法的局部变量 - 您是否打算使用这些变量?

事实上,

在你的StudenProfile类中,没有PInfo和SInfo成员。如果你看一下 StudentCollection.cpp你声明了单独的局部变量 PInfo 和 SInfo

Person PInfo;
Student SInfo;
...

稍后在while循环中,您错误地使用了:

New_Stu.PInfo.SetSetAPerson(SN, first, last, a, sex);
New_Stu.SInfo.SetAStudent(ID, Class1, Class2, Class3);
New_Stu.SInfo.SetACourse(num, name);

我想你也有PersonStudent的课程.可能Student有以下成员SetAStudentSetACourse和类PersonSetSetAPerson。在这种情况下,您可以简单地调用(无需New_Stu):

PInfo.SetSetAPerson(SN, first, last, a, sex);
SInfo.SetAStudent(ID, Class1, Class2, Class3);
SInfo.SetACourse(num, name);