用c++类编写学生选课系统程序

好的，我可以为您提供一个简单的学生选课系统程序。首先，我们需要定义一个学生类（Student），包含学生的基本信息和已选课程信息，代码如下：

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

class Student {
private:
    string name;
    int age;
    string major;
    vector<string> courses; // 已选课程

public:
    Student(string name, int age, string major)
        : name(name), age(age), major(major) {}

    void setName(string name) { this->name = name; }
    void setAge(int age) { this->age = age; }
    void setMajor(string major) { this->major = major; }

    string getName() const { return name; }
    int getAge() const { return age; }
    string getMajor() const { return major; }
    vector<string> getCourses() const { return courses; }

    void addCourse(string course) { courses.push_back(course); }
};

下一步，我们需要定义一个课程类（Course），包含课程的基本信息和已选学生信息，代码如下：

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

class Course {
private:
    string name;
    string teacher;
    int capacity; // 课程容量
    vector<Student*> students; // 已选学生

public:
    Course(string name, string teacher, int capacity)
        : name(name), teacher(teacher), capacity(capacity) {}

    void setName(string name) { this->name = name; }
    void setTeacher(string teacher) { this->teacher = teacher; }
    void setCapacity(int capacity) { this->capacity = capacity; }

    string getName() const { return name; }
    string getTeacher() const { return teacher; }
    int getCapacity() const { return capacity; }
    vector<Student*> getStudents() const { return students; }

    bool addStudent(Student* student) {
        if (students.size() >= capacity) {
            return false; // 课程已满，选课失败
        }
        students.push_back(student);
        student->addCourse(name);
        return true; // 选课成功
    }
};

最后，我们可以编写一个简单的选课系统程序，代码如下：

#include <iostream>
#include "Student.h"
#include "Course.h"
using namespace std;

int main() {
    // 创建学生和课程
    Student* s1 = new Student("Tom", 18, "Computer Science");
    Student* s2 = new Student("Jerry", 19, "Math");
    Course* c1 = new Course("C++ Programming", "John", 2);
    Course* c2 = new Course("Data Structures", "Mike", 1);

    // 学生选课
    bool success = c1->addStudent(s1);
    if (success) {
        cout << s1->getName() << " selected " << c1->getName() << endl;
    } else {
        cout << "Selection failed." << endl;
    }

    success = c1->addStudent(s2);
    if (success) {
        cout << s2->getName() << " selected " << c1->getName() << endl;
    } else {
        cout << "Selection failed." << endl;
    }

    success = c2->addStudent(s1);
    if (success) {
        cout << s1->getName() << " selected " << c2->getName() << endl;
    } else {
        cout << "Selection failed." << endl;
    }

    // 输出学生的选课信息
    vector<string> courses = s1->getCourses();
    cout << s1->getName() << " selected courses: ";
    for (string course : courses) {
        cout << course << " ";
    }
    cout << endl;

    courses = s2->getCourses();
    cout << s2->getName() << " selected courses: ";
    for (string course : courses) {
        cout << course << " ";
    }
    cout << endl;

    // 释放内存
    delete s1;
    delete s2;
    delete c1;
    delete c2;

    return 0;
}

这个程序可以让学生选课，并输出学生的选课信息。当课程已满时，选课失败。同时，这个程序还考虑了内存释放问题，避免了内存泄漏。