大学生选课系统设计c++代码

对于一个完整的大学生选课系统，需要设计的代码量非常大，这里提供一个简单的选课系统的C++代码供参考：

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

using namespace std;

// 学生类
class Student {
public:
    Student(string id, string name) : id_(id), name_(name) {}
    string getId() const { return id_; }
    string getName() const { return name_; }
private:
    string id_;   // 学生ID
    string name_; // 学生姓名
};

// 课程类
class Course {
public:
    Course(string id, string name, int capacity) : id_(id), name_(name), capacity_(capacity) {}
    string getId() const { return id_; }
    string getName() const { return name_; }
    int getCapacity() const { return capacity_; }
    int getEnrollment() const { return students_.size(); }
    bool isFull() const { return getEnrollment() >= capacity_; }
    void enroll(Student* student) { students_.push_back(student); }
private:
    string id_;    // 课程ID
    string name_;  // 课程名称
    int capacity_; // 课程容量
    vector<Student*> students_; // 选修该课程的学生列表
};

// 选课系统类
class CourseSelectionSystem {
public:
    // 添加学生
    void addStudent(string id, string name) {
        students_.push_back(new Student(id, name));
    }
    // 添加课程
    void addCourse(string id, string name, int capacity) {
        courses_.push_back(new Course(id, name, capacity));
    }
    // 学生选课
    bool enrollCourse(string courseId, string studentId) {
        Course* course = findCourseById(courseId);
        if (course == nullptr) {
            return false;
        }
        if (course->isFull()) {
            return false;
        }
        Student* student = findStudentById(studentId);
        if (student == nullptr) {
            return false;
        }
        course->enroll(student);
        return true;
    }
    // 查询学生选课情况
    void queryStudentCourses(string studentId) {
        Student* student = findStudentById(studentId);
        if (student == nullptr) {
            cout << "Student not found!" << endl;
            return;
        }
        cout << student->getName() << " has enrolled in the following courses:" << endl;
        for (auto course : courses_) {
            for (auto s : course->students_) {
                if (s == student) {
                    cout << course->getName() << endl;
                    break;
                }
            }
        }
    }
    // 查询课程选课情况
    void queryCourseEnrollment(string courseId) {
        Course* course = findCourseById(courseId);
        if (course == nullptr) {
            cout << "Course not found!" << endl;
            return;
        }
        cout << course->getName() << " has " << course->getEnrollment() << " students enrolled." << endl;
    }
private:
    // 根据ID查找学生
    Student* findStudentById(string id) {
        for (auto student : students_) {
            if (student->getId() == id) {
                return student;
            }
        }
        return nullptr;
    }
    // 根据ID查找课程
    Course* findCourseById(string id) {
        for (auto course : courses_) {
            if (course->getId() == id) {
                return course;
            }
        }
        return nullptr;
    }
    vector<Student*> students_; // 学生列表
    vector<Course*> courses_;   // 课程列表
};

int main() {
    CourseSelectionSystem css;

    css.addStudent("001", "Alice");
    css.addStudent("002", "Bob");
    css.addCourse("001", "Math", 2);
    css.addCourse("002", "English", 1);

    css.enrollCourse("001", "001");
    css.enrollCourse("002", "001");
    css.enrollCourse("001", "002");

    css.queryStudentCourses("001");
    css.queryStudentCourses("002");

    css.queryCourseEnrollment("001");
    css.queryCourseEnrollment("002");

    return 0;
}

在这个简单的选课系统中，包含了学生类、课程类和选课系统类。学生类和课程类分别表示学生和课程的信息，选课系统类提供了添加学生和课程、学生选课、查询学生选课情况、查询课程选课情况等功能。在主函数中，我们通过调用选课系统类的相应函数来模拟选课的过程，并且输出相应的结果。