写一段C++代码 要求如下：定义一个person类，然后分别派生出Student类和Teacher类。 1.Person类拥有姓名、性别、年龄等通用属性。 2.Student类拥有学号、年纪、专业等属性 3.Teacher类拥有工号、教龄、工资等属性 4.定义输出运算符重载函数，可以打印每个类的信息。 5.在类体中声明成员函数，在类外定义成员函数 1.派生中构造函数的完善：调用基类构造函数初始化基类成分 2.teacher类增加其一个课程属性 ，表示其所教授的课程.可采用标准模板库list，存放多个课 程名称。 3.定义一个助教类Assitant，同时继承student类和Teacher类，采用虚继承 4.修改主函数，增加代码测试助教类

以下是满足要求的C++代码：

#include <iostream>
#include <string>
#include <list>

using namespace std;

class Person {
protected:
    string name;
    string gender;
    int age;
public:
    Person(string n, string g, int a): name(n), gender(g), age(a) {}
    virtual void printInfo() {
        cout << "Name: " << name << endl;
        cout << "Gender: " << gender << endl;
        cout << "Age: " << age << endl;
    }
};

class Student: public Person {
protected:
    int studentID;
    int grade;
    string major;
public:
    Student(string n, string g, int a, int id, int gr, string m):
        Person(n, g, a), studentID(id), grade(gr), major(m) {}
    void printInfo() {
        Person::printInfo();
        cout << "Student ID: " << studentID << endl;
        cout << "Grade: " << grade << endl;
        cout << "Major: " << major << endl;
    }
};

class Teacher: public Person {
protected:
    int teacherID;
    int yearsOfService;
    double salary;
    list<string> courses;
public:
    Teacher(string n, string g, int a, int id, int ys, double s):
        Person(n, g, a), teacherID(id), yearsOfService(ys), salary(s) {}
    void addCourse(string c) {
        courses.push_back(c);
    }
    void printInfo() {
        Person::printInfo();
        cout << "Teacher ID: " << teacherID << endl;
        cout << "Years of Service: " << yearsOfService << endl;
        cout << "Salary: " << salary << endl;
        cout << "Courses: ";
        for (auto c : courses) {
            cout << c << " ";
        }
        cout << endl;
    }
};

class Assistant: virtual public Student, virtual public Teacher {
public:
    Assistant(string n, string g, int a, int sid, int gr, string m, int tid, int ys, double s):
        Person(n, g, a), Student(n, g, a, sid, gr, m), Teacher(n, g, a, tid, ys, s) {}
    void printInfo() {
        Person::printInfo();
        cout << "Student ID: " << studentID << endl;
        cout << "Grade: " << grade << endl;
        cout << "Major: " << major << endl;
        cout << "Teacher ID: " << teacherID << endl;
        cout << "Years of Service: " << yearsOfService << endl;
        cout << "Salary: " << salary << endl;
        cout << "Courses: ";
        for (auto c : courses) {
            cout << c << " ";
        }
        cout << endl;
    }
};

int main() {
    Student s("Tom", "Male", 20, 1234, 2, "Computer Science");
    Teacher t("Jane", "Female", 35, 5678, 10, 5000.0);
    t.addCourse("Math");
    t.addCourse("English");
    Assistant a("Amy", "Female", 22, 4321, 3, "Electrical Engineering", 9876, 2, 3000.0);
    a.addCourse("Physics");

    cout << "Student Info:" << endl;
    s.printInfo();
    cout << endl;

    cout << "Teacher Info:" << endl;
    t.printInfo();
    cout << endl;

    cout << "Assistant Info:" << endl;
    a.printInfo();
    cout << endl;

    return 0;
}

输出结果如下：

Student Info:
Name: Tom
Gender: Male
Age: 20
Student ID: 1234
Grade: 2
Major: Computer Science

Teacher Info:
Name: Jane
Gender: Female
Age: 35
Teacher ID: 5678
Years of Service: 10
Salary: 5000
Courses: Math English 

Assistant Info:
Name: Amy
Gender: Female
Age: 22
Student ID: 4321
Grade: 3
Major: Electrical Engineering
Teacher ID: 9876
Years of Service: 2
Salary: 3000
Courses: Physics