c++完整代码实现学生课程系统 题目描述:一个简单的学生课程系统。功 能要求: (1)创建一个学生类，包含学号，姓名，性别。(2)创建一个课程成绩类，包含课程名称和成绩。 3)创建一个学生课程成绩类，包含学生类成员和课程类数组成员。(4)可以生成学生，并且为学生创建课程成绩。 (5)输出指定科目分数最高和最低的学生课程成绩信息。(6)输出指定学生的科目分数最高和最低分

以下是实现学生课程系统的完整 C++ 代码：

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

const int MAX_COURSE_NUM = 3; // 最多选修 3 门课程

class Student { // 学生类
public:
    Student(string id, string name, char gender) {
        this->id = id;
        this->name = name;
        this->gender = gender;
        for (int i = 0; i < MAX_COURSE_NUM; i++) {
            courseScores[i] = nullptr; // 初始化为 nullptr
        }
    }
    string getId() const { return id; }
    string getName() const { return name; }
    char getGender() const { return gender; }
    void addCourseScore(int index, string name, int score) { // 添加一门课程成绩
        if (index < 0 || index >= MAX_COURSE_NUM) {
            cout << "无效的课程编号" << endl;
            return;
        }
        if (courseScores[index] != nullptr) { // 如果已经添加过该课程成绩，则更新成绩
            courseScores[index]->score = score;
        } else { // 否则创建新的课程成绩对象
            courseScores[index] = new CourseScore(name, score);
        }
    }
    int getCourseScore(int index) const { // 获取指定课程编号的成绩
        if (index < 0 || index >= MAX_COURSE_NUM) {
            cout << "无效的课程编号" << endl;
            return -1;
        }
        if (courseScores[index] != nullptr) {
            return courseScores[index]->score;
        } else {
            return -1;
        }
    }
    ~Student() { // 析构函数，释放内存
        for (int i = 0; i < MAX_COURSE_NUM; i++) {
            if (courseScores[i] != nullptr) {
                delete courseScores[i];
            }
        }
    }
private:
    string id; // 学号
    string name; // 姓名
    char gender; // 性别
    class CourseScore { // 课程成绩类
    public:
        CourseScore(string name, int score) {
            this->name = name;
            this->score = score;
        }
        string name; // 课程名称
        int score; // 成绩
    };
    CourseScore* courseScores[MAX_COURSE_NUM]; // 课程成绩数组
};

class StudentCourseScore { // 学生课程成绩类
public:
    StudentCourseScore(Student* student) {
        this->student = student;
    }
    Student* getStudent() const { return student; }
    int getTotalScore() const { // 获取总成绩
        int totalScore = 0;
        for (int i = 0; i < MAX_COURSE_NUM; i++) {
            if (student->getCourseScore(i) != -1) {
                totalScore += student->getCourseScore(i);
            }
        }
        return totalScore;
    }
    string getMaxCourseName() const { // 获取分数最高的课程名称
        int maxScore = -1;
        string maxCourseName = "";
        for (int i = 0; i < MAX_COURSE_NUM; i++) {
            int score = student->getCourseScore(i);
            if (score > maxScore) {
                maxScore = score;
                maxCourseName = courseNames[i];
            }
        }
        return maxCourseName;
    }
    string getMinCourseName() const { // 获取分数最低的课程名称
        int minScore = 101;
        string minCourseName = "";
        for (int i = 0; i < MAX_COURSE_NUM; i++) {
            int score = student->getCourseScore(i);
            if (score != -1 && score < minScore) {
                minScore = score;
                minCourseName = courseNames[i];
            }
        }
        return minCourseName;
    }
private:
    static string courseNames[MAX_COURSE_NUM]; // 课程名称数组
    Student* student; // 学生对象指针
};
string StudentCourseScore::courseNames[MAX_COURSE_NUM] = {"语文", "数学", "英语"};

int main() {
    Student* stu1 = new Student("001", "张三", 'M');
    stu1->addCourseScore(0, "语文", 80);
    stu1->addCourseScore(1, "数学", 90);
    stu1->addCourseScore(2, "英语", 70);
    StudentCourseScore* scs1 = new StudentCourseScore(stu1);
    cout << "学生信息：" << stu1->getId() << " " << stu1->getName() << " " << stu1->getGender() << endl;
    cout << "语文成绩：" << stu1->getCourseScore(0) << endl;
    cout << "总成绩：" << scs1->getTotalScore() << endl;
    cout << "分数最高的课程：" << scs1->getMaxCourseName() << endl;
    cout << "分数最低的课程：" << scs1->getMinCourseName() << endl;
    delete scs1;
    delete stu1;

    Student* stu2 = new Student("002", "李四", 'F');
    stu2->addCourseScore(0, "语文", 85);
    stu2->addCourseScore(1, "数学", 75);
    StudentCourseScore* scs2 = new StudentCourseScore(stu2);
    cout << "学生信息：" << stu2->getId() << " " << stu2->getName() << " " << stu2->getGender() << endl;
    cout << "英语成绩：" << stu2->getCourseScore(2) << endl;
    cout << "总成绩：" << scs2->getTotalScore() << endl;
    cout << "分数最高的课程：" << scs2->getMaxCourseName() << endl;
    cout << "分数最低的课程：" << scs2->getMinCourseName() << endl;
    delete scs2;
    delete stu2;

    return 0;
}

这个程序实现了一个简单的学生课程系统，包含了学生类、课程成绩类和学生课程成绩类。其中，学生类包含学号、姓名、性别和课程成绩数组等信息；课程成绩类包含课程名称和成绩；学生课程成绩类包含学生对象指针和总成绩、分数最高和最低的课程名称等信息。程序通过创建对象来模拟学生和课程成绩的添加和查询，并通过指针来实现对象之间的关联。