C++错误：不能将指针转换为引用（NETBESE）

好的，我不确定我的名字是否正确，但问题是。我一直试图将包含用户定义的课程对象的数组传递给函数，但它给我的错误是无法转换“课程*&courseCatalog”。 另外，如果我的代码有点难读，我也很抱歉。很多都被注释掉了，所以我可以测试一些东西

我的主要意见是：

#include "cc.h"

int main(int argc, char** argv) {
    bool again=1;
    Course c;
    ifstream catalogIn("catalog.dat");
    ofstream catalogOut("catalog.dat");
    Course courseCatalog[256];

    loadInCourses(catalogIn, courseCatalog);

    courseCatalog[getNumCourses(courseCatalog)+1]=addCourse();

    loadOutCourses(catalogOut, courseCatalog);

    return 0;
}

我的职能：

#include "cc.h"

int displayMainMenu(){
  int choice;
  cout<<endl<<"**********MAIN MENU**********"<<endl;
  cout<<"1. Print List Schedule"<<endl;
  cout<<"2. Print Weekly Schedule"<<endl;
  cout<<"3. Get Course"<<endl;
  cout<<"4. Advanced Options"<<endl;
  cout<<"0 to Quit"<<endl;
  cout<<"*****************************"<<endl<<endl;
  cout<<"Menu Choice: ";
  cin>>choice;
  return choice;
}
int displayAdvMenu(){
  int choice;
  cout<<endl<<"**********ADV MENU**********"<<endl;
  cout<<"1. Add Course to Catalog"<<endl;
  cout<<"2. Remove Duplicates"<<endl;
  cout<<"0 to go Back"<<endl;
  cout<<"****************************"<<endl<<endl;
  cout<<"Menu Choice: ";
  cin>>choice;
  return choice;
}

Course addCourse(){
  Course course;

  cout<<"\nCourse name:\t\t";
  cin.ignore();
  cin.getline(course.name, CNAMESIZE);

  cout<<"Course ID:\t\t";
  cin.getline(course.id, CIDSIZE);

  cout<<"Number of credits:\t";
  cin>>course.credits;

  return course;
}

void loadInCourses(ifstream & ifs, Course courseCatalog[]){
    int i=0;
    while(ifs>>courseCatalog[i].credits){
        ifs.getline(courseCatalog[i].name, CNAMESIZE, ',');
        ifs.getline(courseCatalog[i].id, CIDSIZE, ',');
        ifs.getline(courseCatalog[i].professor, CPROFSIZE, ',');
        ifs.getline(courseCatalog[i].semester, CSEMSIZE, ',');
        ifs.get(courseCatalog[i].grade);
        i++;
    }
    return;
}

void loadOutCourses(ofstream & ofs, Course courseCatalog[]){
    for(int i=0; i<=getNumCourses(courseCatalog); i++){
        ofs<<courseCatalog[i].credits<<
             courseCatalog[i].name<<","<<
             courseCatalog[i].id<<","<<
             courseCatalog[i].professor<<","<<
             courseCatalog[i].semester<<","<<
             courseCatalog[i].grade<<endl;   
    }
}

Course findCourse(ifstream & ifs){
    char attribute;
    string needle;
    int credits;
    int name;
    int id;
    bool again=1;
    int numLines = getNumLines(ifs);

    cout<<"Search by (N)ame or (I)d? ";
    cin>>attribute;
    while(again){
        switch(attribute){
            case 'N': case 'n':
                cout<<"Enter name of course: ";
                cin>>name;
                for(int i=0; i<numLines; i++){

                }
                break;
            case 'I': case 'i':
                cout<<"Enter course ID: ";
                cin>>id;
                break;
            default:
                cout<<"Invalid Attribute. Try Again."<<endl;
        }
    }
}

int getNumCourses(Course courseCatalog[]){
    int numcourses=0;
    for(int i=0;courseCatalog[i].credits!=0;i++){
        numcourses++;
    }
    return numcourses;;
}

int getNumLines(ifstream & ifs){
    char line[1];
    int count=0;

    while(ifs.getline(line, 1)){
        count++;
    }

    ifs.close();
    return count;
}

ostream& operator<<(ostream& os, const Course c){
    os<<endl<<c.name<<endl<<c.id<<endl<<c.credits<<" cr hrs"<<endl;
    return os;
}

#include "cc.h"

int displayMainMenu(){
  int choice;
  cout<<endl<<"**********MAIN MENU**********"<<endl;
  cout<<"1. Print List Schedule"<<endl;
  cout<<"2. Print Weekly Schedule"<<endl;
  cout<<"3. Get Course"<<endl;
  cout<<"4. Advanced Options"<<endl;
  cout<<"0 to Quit"<<endl;
  cout<<"*****************************"<<endl<<endl;
  cout<<"Menu Choice: ";
  cin>>choice;
  return choice;
}
int displayAdvMenu(){
  int choice;
  cout<<endl<<"**********ADV MENU**********"<<endl;
  cout<<"1. Add Course to Catalog"<<endl;
  cout<<"2. Remove Duplicates"<<endl;
  cout<<"0 to go Back"<<endl;
  cout<<"****************************"<<endl<<endl;
  cout<<"Menu Choice: ";
  cin>>choice;
  return choice;
}

Course addCourse(){
  Course course;

  cout<<"\nCourse name:\t\t";
  cin.ignore();
  cin.getline(course.name, CNAMESIZE);

  cout<<"Course ID:\t\t";
  cin.getline(course.id, CIDSIZE);

  cout<<"Number of credits:\t";
  cin>>course.credits;



  /*<<"Enter semester: ";
  cin.getline(course.semester);

  for(int i=0; i<PREREQ_SIZE && choice==1; i++){
    bool choice;
    cout<<"Add PreReq?: ";
    cin>>choice;
    if(choice==1){
      ...
    }
  }

  for(int i=0; i<POSTREQ_SIZE && choice==1; i++){
    bool choice;
    cout<<"Add PostReq?: ";
    cin>>choice;
    if(choice==1){
      ...
    }
  }  */

  return course;
}

void loadInCourses(ifstream & ifs, Course courseCatalog[]){
    cout<<"b*"<<endl<<courseCatalog[0];
    int i=0;
    while(ifs>>courseCatalog[i].credits){
        ifs.getline(courseCatalog[i].name, CNAMESIZE, ',');
        ifs.getline(courseCatalog[i].id, CIDSIZE, ',');
        ifs.getline(courseCatalog[i].professor, CPROFSIZE, ',');
        ifs.getline(courseCatalog[i].semester, CSEMSIZE, ',');
        ifs.get(courseCatalog[i].grade);
        i++;
        cout<<"d*"<<endl<<courseCatalog[i];
    }
    cout<<"c*"<<endl<<courseCatalog[0];    
    return;
}

void loadOutCourses(ofstream & ofs, Course courseCatalog[]){
    for(int i=0; i<=getNumCourses(courseCatalog); i++){
        ofs<<courseCatalog[i].credits<<
             courseCatalog[i].name<<","<<
             courseCatalog[i].id<<","<<
             courseCatalog[i].professor<<","<<
             courseCatalog[i].semester<<","<<
             courseCatalog[i].grade<<endl;   
    }
}

Course findCourse(ifstream & ifs){
    char attribute;
    string needle;
    int credits;
    int name;
    int id;
    bool again=1;
    int numLines = getNumLines(ifs);

    cout<<"Search by (N)ame or (I)d? ";
    cin>>attribute;
    while(again){
        switch(attribute){
            case 'N': case 'n':
                cout<<"Enter name of course: ";
                cin>>name;
                for(int i=0; i<numLines; i++){

                }
                break;
            case 'I': case 'i':
                cout<<"Enter course ID: ";
                cin>>id;
                break;
            default:
                cout<<"Invalid Attribute. Try Again."<<endl;
        }
    }
}

int getNumCourses(Course courseCatalog[]){
    int numcourses=0;
    for(int i=0;courseCatalog[i].credits!=0;i++){
        numcourses++;
    }
    return numcourses;;
}

int getNumLines(ifstream & ifs){
    char ch;
    int count=0;

    while(ch=ifs.get()){
        count+=(ch=='\n'?1:0);
    }

    ifs.close();
    return count;
}

ostream& operator<<(ostream& os, const Course c){
    os<<endl<<c.name<<endl<<c.id<<endl<<c.credits<<" cr hrs"<<endl;
    return os;
}

职能：

#include "cc.h"

int displayMainMenu(){
  int choice;
  cout<<endl<<"**********MAIN MENU**********"<<endl;
  cout<<"1. Print List Schedule"<<endl;
  cout<<"2. Print Weekly Schedule"<<endl;
  cout<<"3. Get Course"<<endl;
  cout<<"4. Advanced Options"<<endl;
  cout<<"0 to Quit"<<endl;
  cout<<"*****************************"<<endl<<endl;
  cout<<"Menu Choice: ";
  cin>>choice;
  return choice;
}
int displayAdvMenu(){
  int choice;
  cout<<endl<<"**********ADV MENU**********"<<endl;
  cout<<"1. Add Course to Catalog"<<endl;
  cout<<"2. Remove Duplicates"<<endl;
  cout<<"0 to go Back"<<endl;
  cout<<"****************************"<<endl<<endl;
  cout<<"Menu Choice: ";
  cin>>choice;
  return choice;
}

Course addCourse(){
  Course course;

  cout<<"\nCourse name:\t\t";
  cin.ignore();
  cin.getline(course.name, CNAMESIZE);

  cout<<"Course ID:\t\t";
  cin.getline(course.id, CIDSIZE);

  cout<<"Number of credits:\t";
  cin>>course.credits;

  return course;
}

void loadInCourses(ifstream & ifs, Course courseCatalog[]){
    int i=0;
    while(ifs>>courseCatalog[i].credits){
        ifs.getline(courseCatalog[i].name, CNAMESIZE, ',');
        ifs.getline(courseCatalog[i].id, CIDSIZE, ',');
        ifs.getline(courseCatalog[i].professor, CPROFSIZE, ',');
        ifs.getline(courseCatalog[i].semester, CSEMSIZE, ',');
        ifs.get(courseCatalog[i].grade);
        i++;
    }
    return;
}

void loadOutCourses(ofstream & ofs, Course courseCatalog[]){
    for(int i=0; i<=getNumCourses(courseCatalog); i++){
        ofs<<courseCatalog[i].credits<<
             courseCatalog[i].name<<","<<
             courseCatalog[i].id<<","<<
             courseCatalog[i].professor<<","<<
             courseCatalog[i].semester<<","<<
             courseCatalog[i].grade<<endl;   
    }
}

Course findCourse(ifstream & ifs){
    char attribute;
    string needle;
    int credits;
    int name;
    int id;
    bool again=1;
    int numLines = getNumLines(ifs);

    cout<<"Search by (N)ame or (I)d? ";
    cin>>attribute;
    while(again){
        switch(attribute){
            case 'N': case 'n':
                cout<<"Enter name of course: ";
                cin>>name;
                for(int i=0; i<numLines; i++){

                }
                break;
            case 'I': case 'i':
                cout<<"Enter course ID: ";
                cin>>id;
                break;
            default:
                cout<<"Invalid Attribute. Try Again."<<endl;
        }
    }
}

int getNumCourses(Course courseCatalog[]){
    int numcourses=0;
    for(int i=0;courseCatalog[i].credits!=0;i++){
        numcourses++;
    }
    return numcourses;;
}

int getNumLines(ifstream & ifs){
    char line[1];
    int count=0;

    while(ifs.getline(line, 1)){
        count++;
    }

    ifs.close();
    return count;
}

ostream& operator<<(ostream& os, const Course c){
    os<<endl<<c.name<<endl<<c.id<<endl<<c.credits<<" cr hrs"<<endl;
    return os;
}

#include "cc.h"

int displayMainMenu(){
  int choice;
  cout<<endl<<"**********MAIN MENU**********"<<endl;
  cout<<"1. Print List Schedule"<<endl;
  cout<<"2. Print Weekly Schedule"<<endl;
  cout<<"3. Get Course"<<endl;
  cout<<"4. Advanced Options"<<endl;
  cout<<"0 to Quit"<<endl;
  cout<<"*****************************"<<endl<<endl;
  cout<<"Menu Choice: ";
  cin>>choice;
  return choice;
}
int displayAdvMenu(){
  int choice;
  cout<<endl<<"**********ADV MENU**********"<<endl;
  cout<<"1. Add Course to Catalog"<<endl;
  cout<<"2. Remove Duplicates"<<endl;
  cout<<"0 to go Back"<<endl;
  cout<<"****************************"<<endl<<endl;
  cout<<"Menu Choice: ";
  cin>>choice;
  return choice;
}

Course addCourse(){
  Course course;

  cout<<"\nCourse name:\t\t";
  cin.ignore();
  cin.getline(course.name, CNAMESIZE);

  cout<<"Course ID:\t\t";
  cin.getline(course.id, CIDSIZE);

  cout<<"Number of credits:\t";
  cin>>course.credits;



  /*<<"Enter semester: ";
  cin.getline(course.semester);

  for(int i=0; i<PREREQ_SIZE && choice==1; i++){
    bool choice;
    cout<<"Add PreReq?: ";
    cin>>choice;
    if(choice==1){
      ...
    }
  }

  for(int i=0; i<POSTREQ_SIZE && choice==1; i++){
    bool choice;
    cout<<"Add PostReq?: ";
    cin>>choice;
    if(choice==1){
      ...
    }
  }  */

  return course;
}

void loadInCourses(ifstream & ifs, Course courseCatalog[]){
    cout<<"b*"<<endl<<courseCatalog[0];
    int i=0;
    while(ifs>>courseCatalog[i].credits){
        ifs.getline(courseCatalog[i].name, CNAMESIZE, ',');
        ifs.getline(courseCatalog[i].id, CIDSIZE, ',');
        ifs.getline(courseCatalog[i].professor, CPROFSIZE, ',');
        ifs.getline(courseCatalog[i].semester, CSEMSIZE, ',');
        ifs.get(courseCatalog[i].grade);
        i++;
        cout<<"d*"<<endl<<courseCatalog[i];
    }
    cout<<"c*"<<endl<<courseCatalog[0];    
    return;
}

void loadOutCourses(ofstream & ofs, Course courseCatalog[]){
    for(int i=0; i<=getNumCourses(courseCatalog); i++){
        ofs<<courseCatalog[i].credits<<
             courseCatalog[i].name<<","<<
             courseCatalog[i].id<<","<<
             courseCatalog[i].professor<<","<<
             courseCatalog[i].semester<<","<<
             courseCatalog[i].grade<<endl;   
    }
}

Course findCourse(ifstream & ifs){
    char attribute;
    string needle;
    int credits;
    int name;
    int id;
    bool again=1;
    int numLines = getNumLines(ifs);

    cout<<"Search by (N)ame or (I)d? ";
    cin>>attribute;
    while(again){
        switch(attribute){
            case 'N': case 'n':
                cout<<"Enter name of course: ";
                cin>>name;
                for(int i=0; i<numLines; i++){

                }
                break;
            case 'I': case 'i':
                cout<<"Enter course ID: ";
                cin>>id;
                break;
            default:
                cout<<"Invalid Attribute. Try Again."<<endl;
        }
    }
}

int getNumCourses(Course courseCatalog[]){
    int numcourses=0;
    for(int i=0;courseCatalog[i].credits!=0;i++){
        numcourses++;
    }
    return numcourses;;
}

int getNumLines(ifstream & ifs){
    char ch;
    int count=0;

    while(ch=ifs.get()){
        count+=(ch=='\n'?1:0);
    }

    ifs.close();
    return count;
}

ostream& operator<<(ostream& os, const Course c){
    os<<endl<<c.name<<endl<<c.id<<endl<<c.credits<<" cr hrs"<<endl;
    return os;
}

标题：

#ifndef CC_H
#define CC_H

#include <iostream>
#include <fstream>
#include <cstdlib>
#include <cstring>
using namespace std;

const int PREREQ_SIZE = 15;
const int POSTREQ_SIZE = 15;
const int CNAMESIZE=40;
const int CIDSIZE=15;
const int CPROFSIZE=40;
const int CSEMSIZE=15;

struct Course{
  char name[CNAMESIZE];
  char id[CIDSIZE];
  int credits;
  char professor[CPROFSIZE];
  char semester[CSEMSIZE];
  char grade;
  float timeStart;
  float timeStop;
  friend ostream& operator<<(ostream& os, const Course c);
};

Course addCourse();
int displayMainMenu();
int displayAdvMenu();
void printString(Course c);
void loadInCourses(ifstream & ifs, Course courseCatalog[]);
void loadOutCourses(ofstream & ofs, Course courseCatalog[]);
Course findCourse(ifstream & ifs);
int getNumCourses(Course courseCatalog[]);
int getNumLines(ifstream & ifs);

#endif  /* CC_H */

---

您的错误应该有两部分，无法从转换。。。还有

你是从……来的。。函数签名定义了要

这两者不一样。您必须更改函数签名以匹配传入的，或者修改传递签名的内容以匹配函数原型定义的

你会发现阅读整个错误是最有帮助的，你可能会认为发布整个错误是值得的，因为向我们展示部分错误几乎毫无意义。这会给你带来毫无意义的评论

如果您所追求的是一个指向任何数组的指针的函数，那么您可能应该这样称呼它：

Course (*courseCatalog)[]

或者简单地说：

课程*couseCatalog

在cc.h中，这些行：

void loadInCourses(ifstream & ifs, Course courseCatalog);
void loadOutCourses(ofstream & ofs, Course courseCatalog);

应该是

void loadInCourses(ifstream & ifs, Course courseCatalog[]);
void loadOutCourses(ofstream & ofs, Course courseCatalog[]);

getNumLines中还有一个逻辑错误。如果istream:：getline函数在到达行的末尾之前填充了缓冲区，则不会丢弃行的其余部分。您将在后续读取中获得该行的其余部分

相反，您可以只执行ifs.get并计算发生的次数

---

此函数用于关闭ifs。它只从findCourse调用，而findCourse还从未调用过。但是，当您调用findCourse时，请注意，如果要再次读取或重新打开文件，则需要将流倒回起始位置。

哪一行出现错误？对我来说，它在loadInCourses和loadOutCourses fns的主文件中抛出错误。对我来说，它编译，你看到上面提供的链接了吗？你的编译器是什么？netbeans上的cygwin。你在用什么？你有一个非常奇怪的编译器，privatedata我不知道还有更多的错误。这就是ide给我的全部。我不想传递指针，我想传递数组本身。我对C++是相当新的，甚至还没有用指针来处理。我希望它都在数组对象中。你为什么要复制整个数组？你知道你的函数声明签名与你的函数定义签名不匹配吗？哦。。。我没有。这会导致那种错误吗？我现在不在电脑旁，所以我暂时无法参加考试。我肯定这是你的问题。修正标题。我没有意识到您确实正确定义了函数。声明被破坏了。嘿，谢谢你关于getNumLines的提示！你对ifstream了解很多吗？我最近才开始使用它，但每当我访问一个已经有内容的文件时，它就会被清除。我尝试将ifs模式设置为ios:：app，但也不起作用。我会上传我更新的代码…如果流不应该清除文件，可能是发生了其他事情。正如我所说，我刚开始使用文件流，所以我想我应该先检查一下，我在loadInCourses之前添加了以下代码，它没有打印任何空值，所以我想我的问题在于fstreams字符行的声明[60]；catalogIn.getLine，60；coutI刚刚注意到您对这两个文件使用了相同的文件名。您不应该这样做，即在不同的句柄上同时打开一个文件进行读取和写入。这可以解释你的症状。更新您的代码，以便在任何时候只有这两个流中的一个是打开的。