求大神指导，加粗的行有错误无error C2440:

Question

error C2440: 无法从“student”转换为“student * 没有可用于执行该转换的用户定义的转换运算符，或者无法调用该运算符#include<iostream>#include<fstream>#include<string.h>#include<conio.h>              //用getch();using namespace std;//学生类class student{public:    char Id[20];    char name[10];    char sex[3];long telephone;student*Next;//student(long xh,char nm[],char sx[],long tel)//{// xuehao=xh;// strcpy(name, nm);// strcpy(sex, sx);// telephone = tel;//}void newstudent();void input(){cout << "学号:"; cin >> Id;cout << "姓名:"; cin >> name;cout << "性别:"; cin >> sex;cout << "电话:"; cin >> telephone;}void ReadFile(istream&in){cin >> Id >> name >> sex >> telephone;}void show() const{cout << "学号" << Id;cout << "姓名" << name;cout << "性别" << sex;cout << "电话" << telephone;}}newstudent;//教师类class teacher{public:long teachernumber;char name[10];long classnumber;char classname[10];char commentperformance[100];/*teacher(long tnum, char nm[], long cnum, char cnm[], char comper[]){teachernumber = tnum;strcpy(name, nm);classnumber = cnum;strcpy(classname, cnm);strcpy(commentperformance, comper);}*/void teacherinput(){cout << "教师编号:"; cin >> teachernumber;cout << "教师名称:"; cin >> name;cout << "任教课程编号:"; cin >> classnumber;cout << "任教课程名:"; cin >> classname;cout << "评教成绩:"; cin >> commentperformance;}void show() {cout << "教师编号:"<< teachernumber;cout << "教师名称:"<< name;cout << "任教课程编号:"<<classnumber;cout << "任教课程名:"<<classname;cout << "评教成绩:"<<commentperformance;}};//评教类class commentsystem{public:commentsystem();~commentsystem();void showmenu();void showinformation();void find();void save();void modifyinformation();void removeinformation();void swap(student*, student*);void display(){for (student*p = Head->Next; p != End;p=p->Next)p->show();cout << "输入任意字符！继续……";getch();}void addinformation(){End->input();End->Next = newstudent();End = End->Next;cout << "添加成功!" << endl;cout << "输入任意字符！继续……";getch();}private:student*Head, *End;ifstream in;ofstream out;student*FindItem(char*name){for (student*p = Head; p->Next != End; p = p->Next)//匹配成功则返回上一个指针，不成功就返回空if (!strcmp(p->Next->name, name))return p;return NULL;}student*FindID(char*Id){for (student*p = Head; p->Next != End; p = p->Next)//匹配成功则返回上一个指针，不成功就返回空if (!strcmp(p->Next->Id, Id))return p;return NULL;}};//构造函数commentsystem::commentsystem(){Head = newstudent;Head->Next = newstudent;End = Head->Next;in.open("D:/sort.txt");if (!in)cout << "这是一个新系统，无学生信息。请先输入。" << endl;else{while (!in.eof()){End->ReadFile(in);if (End->name[0] == '\0')break;End->Next = newstudent;End = End->Next;}in.close();cout << "\t\t读取学生信息成功!" << endl;}}//析构函数commentsystem::~commentsystem(){save();for (student*temp; Head->Next != End;){temp = Head->Next;Head->Next = Head->Next->Next;delete temp;}delete Head, End;}//菜单void commentsystem::showmenu(){cout << "^^^^^^^^^^学生评教系统^^^^^^^^^^" << endl;cout << "^^^^^^^^^^1.输入学生信息^^^^^^^^^^" << endl;cout << "^^^^^^^^^^2.输入教师信息^^^^^^^^^^" << endl;cout << "^^^^^^^^^^3.输入评教信息^^^^^^^^^^" << endl;cout << "^^^^^^^^^^4.查找信息^^^^^^^^^^" << endl;cout << "^^^^^^^^^^5.删除信息 ^^^^^^^^^^" << endl;cout << "^^^^^^^^^^6.修改信息^^^^^^^^^^" << endl;cout << "^^^^^^^^^^0.退出^^^^^^^^^^" << endl;cout << "请选择：";}//查找函数void commentsystem::find(){char name[20], Id[10];int x;

Answer 1

newstudent 应写成 new student ,你写来连着了，不知道是不是粘贴到这边的错误，反正我这边改了之后编译没有问题