#ifndef COURSE_H
#define COURSE_H
#include 
using namespace std;
class Course
{
public:
Course(const string& courseName, int capacity);
~Course();
string getCourseName() const;
void addStudent(const string& name);
void dropStudent(const string& name);
string* getStudents() const;
int getNumberOfStudents() const;
private:
string courseName; 
string* students;
int numberOfStudents; 
int capacity;
};
#endif

int main()
{
Course course1("Data Structures", 10);
Course course2("Database Systems", 15);
course1.addStudent("Peter Jones");
course1.addStudent("Brian Smith");
course1.addStudent("Anne Kennedy");
course2.addStudent("Peter Jones");
course2.addStudent("Steve Smith");
cout << "Number of students in course1: "
    << course1.getNumberOfStudents() << endl;
string* students = course1.getStudents();
for (int i = 0; i < course1.getNumberOfStudents(); i++)
    cout << students[i] << ", ";

cout << endl;

cout << "Number of students in course2: "
    << course2.getNumberOfStudents() << endl;
students = course2.getStudents();
for (int i = 0; i < course2.getNumberOfStudents(); i++)
    cout << students[i] << ", ";

cout << endl;

return 0;
}

#include 
#include "Course.h"
using namespace std;
int main()
{
Course course1("C++", 10);
Course course2(course1);
course1.addStudent("Peter Pan");
course2.addStudent("Lisa Ma");

cout << "students in course1: " <<
    course1.getStudents()[0] << endl;
cout << "students in course2: " <<
    course2.getStudents()[0] << endl;

return 0;
}

ps: 

添加学生时，若数组容量不够，则创建一个更大的数组，并将内容拷贝到新的数组；

实现dropStudents函数；

添加一个新的函数clear()，删除该课程的所有学生；

在该类中实现自定义的析构函数和拷贝构造函数，达到深拷贝的目的；

编写测试程序，测试实现的类。