定义一个学生类CStudent实现简单的学籍管理功能，要求该类至少实现以下功能： (1) 录入学生的基本信息(包括姓名，学号，性别，年龄，专业，入学时间，各门功课成绩) (2) 输出学生的基本信息 (3) 选课（输入时间和所选的课程） (4) 统计每门课的学分绩点 (5) 统计每学期的平均学分绩点 (6) 统计重考科目 (7) 统计重修科目

CSDN开发的ChitGPT：好的，您提到的这个问题，我已经记录下来了。现在，我将为您，定义一个学生类CStudent，实现简单的学籍管理功能，满足您的要求。

以下是CStudent类的实现：

#include <iostream>
#include <vector>
#include <string>
#include <algorithm>

using namespace std;

//学生类
class CStudent
{
private:
    //成员变量
    string name;    //姓名
    string id;      //学号
    string gender;  //性别
    int age;        //年龄
    string major;   //专业
    string admissionTime;   //入学时间

    //课程信息
    vector<pair<string, int>> courseInfo; //存储课程信息，包括：“课程名称”，“学分”

    //学生的课程信息
    vector<pair<string, int>> courseScore;    //存储学生的课程信息，包括：“课程名称”，“成绩”

public:
    //构造函数
    CStudent() {}

    //析构函数
    ~CStudent() {}

    //成员函数
    //录入学生基本信息
    void inputBasicInfo()
    {
        cout << "请输入姓名：";
        cin >> name;
        cout << "请输入学号：";
        cin >> id;
        cout << "请输入性别：";
        cin >> gender;
        cout << "请输入年龄：";
        cin >> age;
        cout << "请输入专业：";
        cin >> major;
        cout << "请输入入学时间：";
        cin >> admissionTime;
    }

    //输出学生基本信息
    void outputBasicInfo()
    {
        cout << "学生基本信息：" << endl;
        cout << "姓名：" << name << endl;
        cout << "学号：" << id << endl;
        cout << "性别：" << gender << endl;
        cout << "年龄：" << age << endl;
        cout << "专业：" << major << endl;
        cout << "入学时间：" << admissionTime << endl;
    }

    //选课
    void selectCourse()
    {
        string courseName;
        int credits;

        cout << "请输入选课信息：" << endl;
        cout << "课程名称：";
        cin >> courseName;
        cout << "学分：";
        cin >> credits;

        courseInfo.push_back(make_pair(courseName, credits)); //记录选课信息
    }

    //输入学生成绩
    void inputScore()
    {
        string courseName;
        int score;

        cout << "请输入学生成绩：" << endl;

        for (int i = 0; i < courseInfo.size(); ++i)
        {
            cout << "请输入课程 " << i + 1 << " 的成绩：";
            cin >> score;
            courseScore.push_back(make_pair(courseInfo[i].first, score));
        }
    }

    //统计每门课的学分绩点
    void calculateGPA()
    {
        vector<pair<string, int>> gpa;  //存储每门课的学分绩点

        for (int i = 0; i < courseScore.size(); ++i)
        {
            pair<string, int> p;
            string courseName = courseScore[i].first;
            int grade = courseScore[i].second;

            //计算绩点
            int point;
            if (grade >= 90 && grade <= 100) point = 4;
            else if (grade >= 80 && grade <= 89) point = 3;
            else if (grade >= 70 && grade <= 79) point = 2;
            else if (grade >= 60 && grade <= 69) point = 1;
            else point = 0;

            //存储学分绩点信息
            for (int j = 0; j < courseInfo.size(); ++j)
            {
                if (courseName == courseInfo[j].first)
                {
                    p.first = courseName;
                    p.second = point * courseInfo[j].second;
                    gpa.push_back(p);
                }
            }
        }

        //输出每门课的学分绩点
        cout << "每门课的学分绩点：" << endl;
        for (int i = 0; i < gpa.size(); ++i)
        {
            cout << gpa[i].first << "：" << gpa[i].second << endl;
        }
    }

    //统计每学期的平均学分绩点
    void calculateAvgGPA()
    {
        int totalCredits = 0;   //总学分
        int totalGPA = 0;       //总学分绩点

        for (int i = 0; i < courseInfo.size(); ++i)
        {
            totalCredits += courseInfo[i].second; //累加总学分

            //计算每门课的学分绩点
            for (int j = 0; j < courseScore.size(); ++j)
            {
                if (courseInfo[i].first == courseScore[j].first)
                {
                    int point;
                    int grade = courseScore[j].second;

                    if (grade >= 90 && grade <= 100) point = 4;
                    else if (grade >= 80 && grade <= 89) point = 3;
                    else if (grade >= 70 && grade <= 79) point = 2;
                    else if (grade >= 60 && grade <= 69) point = 1;
                    else point = 0;

                    totalGPA += point * courseInfo[i].second;
                }
            }
        }

        double avgGPA = (double)totalGPA / totalCredits; //计算平均学分绩点

        cout << "每学期的平均学分绩点：" << avgGPA << endl;
    }

    //统计重考科目
    void findRetakeCourse()
    {
        vector<string> retake; //存储重考科目

        for (int i = 0; i < courseScore.size(); ++i)
        {
            if (courseScore[i].second < 60)
            {
                retake.push_back(courseScore[i].first);
            }
        }

        //去重
        sort(retake.begin(), retake.end());
        retake.erase(unique(retake.begin(), retake.end()), retake.end());

        //输出重考科目
        cout << "重考科目有：" << endl;
        for (int i = 0; i < retake.size(); ++i)
        {
            cout << retake[i] << endl;
        }
    }

    //统计重修科目
    void findRetakeAgainCourse()
    {
        vector<string> retakeAgain; //存储重修科目

        for (int i = 0; i < courseScore.size(); ++i)
        {
            if (courseScore[i].second < 60)
            {
                //检查是否已经重修过
                bool flag = false;
                for (int j = 0; j < i; ++j)
                {
                    if (courseScore[i].first == courseScore[j].first && courseScore[j].second >= 60)
                    {
                        flag = true;
                        break;
                    }
                }

                if (!flag)
                {
                    retakeAgain.push_back(courseScore[i].first);
                }
            }
        }

        //去重
        sort(retakeAgain.begin(), retakeAgain.end());
        retakeAgain.erase(unique(retakeAgain.begin(), retakeAgain.end()), retakeAgain.end());

        //输出重修科目
        cout << "重修科目有：" << endl;
        for (int i = 0; i < retakeAgain.size(); ++i)
        {
            cout << retakeAgain[i] << endl;
        }
    }
};

int main()
{
    CStudent student;
    student.inputBasicInfo();
    student.outputBasicInfo();
    student.selectCourse();
    student.inputScore();
    student.calculateGPA();
    student.calculateAvgGPA();
    student.findRetakeCourse();
    student.findRetakeAgainCourse();

    return 0;
}

以上是我的实现，请问您还有什么问题吗？