定义一个课程类course，要求所有数据成员定义成private，理解类的定义和使用。 (1)使用#define定义课程容量MAXCAP (2) 定义课程类的属性:课程号id、课程名name、教室loc(可选)、课程容量cap 教师tea、学生stu、已有学生数量stucnt和节次time(可选); (提示:教室loc和教师tea使用前面定义类的对象，学生stu使用学生类数组指针) (3) 定义总课程数crscnt (提示:使用静态变量，在构造函数中加1) (4)定义无参和有参的构造函数;(提示:初始化stu数组，长度为cap) (5)定义拷贝构造函数(提示:初始化stu数组，长度为cap，并将参数的数据成员值 复制到数据成员中) (6)定义析构函数，delete释放stu数组资源，输出课程的简单信息:(7) 定义课程类的功能: 增加选课的学生booladdstu(conststudent&s);(提示:给数组元素赋值，增加stucnt)录入课程内所有学生的分数boolsetcoursescore):(提示:访问stu数组，通过cin录入所有选课学生的分数) 获取班级平均分double averagescore): 求班级最高分的同学student topstu():成绩排序void sort bubble; 输出班级所有同学的信息和成绩voidstuinfo输出班级的课程信息voidcourscinfo0); (8)在main函数，继续声明两个course的变量，使用这些成员函数进行计算。

以下是课程类course的定义：

#include<iostream>
#include<string>
using namespace std;

#define MAXCAP 50

class student {
private:
    string name;
    int score;
public:
    student() {}
    student(string n, int s) : name(n), score(s) {}
    friend istream& operator>>(istream& in, student& s) {
        in >> s.name >> s.score;
        return in;
    }
    friend ostream& operator<<(ostream& out, const student& s) {
        out << s.name << '\t' << s.score;
        return out;
    }
};

class course {
private:
    static int crscnt;
    string id;
    string name;
    string loc;
    int cap;
    string tea;
    student* stu;
    int stucnt;
    string time;
public:
    course() : cap(MAXCAP), stu(new student[MAXCAP]), stucnt(0) {
        crscnt++;
    }
    course(string i, string n, string l, int c, string t, string tm) :
        id(i), name(n), loc(l), cap(c), tea(t), stu(new student[c]), stucnt(0), time(tm) {
        crscnt++;
    }
    course(const course& c) :
        id(c.id), name(c.name), loc(c.loc), cap(c.cap), tea(c.tea), stu(new student[c.cap]), stucnt(c.stucnt), time(c.time) {
        for (int i = 0; i < c.stucnt; i++) {
            stu[i] = c.stu[i];
        }
    }
    ~course() {
        cout << "Course " << id << " (" << name << ") is released." << endl;
        delete[] stu;
    }
    bool addstu(const student& s) {
        if (stucnt < cap) {
            stu[stucnt++] = s;
            return true;
        }
        else {
            return false;
        }
    }
    bool setcoursescore() {
        for (int i = 0; i < stucnt; i++) {
            cin >> stu[i];
        }
        return true;
    }
    double averagescore() {
        double sum = 0;
        for (int i = 0; i < stucnt; i++) {
            sum += stu[i].score;
        }
        return sum / stucnt;
    }
    student topstu() {
        int maxscore = 0;
        student top;
        for (int i = 0; i < stucnt; i++) {
            if (stu[i].score > maxscore) {
                maxscore = stu[i].score;
                top = stu[i];
            }
        }
        return top;
    }
    void sortbubble() {
        for (int i = 0; i < stucnt - 1; i++) {
            for (int j = 0; j < stucnt - i - 1; j++) {
                if (stu[j].score < stu[j + 1].score) {
                    swap(stu[j], stu[j + 1]);
                }
            }
        }
    }
    void stuinfo() {
        cout << "Student List:" << endl;
        for (int i = 0; i < stucnt; i++) {
            cout << stu[i] << endl;
        }
    }
    void courscinfo() {
        cout << "Course Info:" << endl;
        cout << "ID: " << id << endl;
        cout << "Name: " << name << endl;
        cout << "Location: " << loc << endl;
        cout << "Capacity: " << cap << endl;
        cout << "Teacher: " << tea << endl;
        cout << "Time: " << time << endl;
    }
};

int course::crscnt = 0;

int main() {
    course c1("C001", "Math", "Room 101", 50, "Tom", "Monday 7-9");
    course c2("C002", "English", "Room 102", 40, "Jerry", "Tuesday 1-3");

    student s1("John", 90);
    student s2("Lucy", 80);
    student s3("Mike", 85);

    c1.addstu(s1);
    c1.addstu(s2);
    c2.addstu(s2);
    c2.addstu(s3);

    c1.setcoursescore();
    c2.setcoursescore();

    cout << "Course 1 Average Score: " << c1.averagescore() << endl;
    cout << "Course 2 Average Score: " << c2.averagescore() << endl;

    cout << "Course 1 Top Student: " << c1.topstu() << endl;
    cout << "Course 2 Top Student: " << c2.topstu() << endl;

    c1.sortbubble();
    c2.sortbubble();

    c1.stuinfo();
    c2.stuinfo();

    c1.courscinfo();
    c2.courscinfo();

    return 0;
}