哥哥姐姐们帮忙看下这个程序该怎么修改  谢谢了

#ifndef COURSE_H
#define COURSE_H

#include <vector>
#include <string>
using namespace std;
class CCourse
{
public:
    Course(const string &courseName);
    string getCourseName();
    void addStudent(const string &student);
    string *getStudent();
    int getNumberOfStudents();

private:
    string m_scourseName;
    vector<string> v_sstudent;
    int m_inumberOfStudents;
};

#endif#include "CourseClass.h"
#include <iostream>
using namespace std;
CCourse::Course(const string &courseName)
{
    m_inumberOfStudents = 0;
    this->m_scourseName = courseName;
}

string CCourse::getCourseName()
{
    return m_scourseName;
}

void CCourse::addStudent(const string &student)
{
    v_sstudent.push_back(student);
    m_inumberOfStudents++;
}
string *CCourse::getStudent()
{
    return v_sstudent.begin();
}

int CCourse::getNumberOfStudents()
{
    return m_inumberOfStudents;
}#include "CourseClass.h"
#include <iostream>
using namespace std;
void main()
{

    CCourse course("Database");
    string stuName;
    bool flag = 1;
    while(flag)
    {
        cout<<"请输入添加学生的姓名:"<<endl;
        cin>>string stuName;
        course.addStudent(stuName);
        cout<<"继续加入学生? 是(1) 否(0)"<<endl;
        cin>>flag;
    }
    cout<<"本课堂的学生为"<<course.getCourseName()<<endl;
    cout<<"本课堂共有学生的人数为"<<course.getNumberOfStudents()<<endl;
    cout<<"检测通过"<<endl;
}

系统总是提示一些莫名其妙的错误
error C2664: '__thiscall CCourse::CCourse(const class CCourse &)' : cannot convert parameter 1 from 'char [9]' to 'const class CCourse &'
        Reason: cannot convert from 'char [9]' to 'const class CCourse'
error C2275:'string' : illegal use of this type as an expression
        c:\program files\microsoft visual studio\vc98\include\xstring(612) : see declaration of 'string'

谢谢~问题解决了~可是不知道怎么给你分~告下怎么给分~