设计4个类：Person，Student，Employee和TeachingAssistant，并根据main()函数能输出样例内容 Person类中包括数据成员string name，函数void introduce()输入内容cout << "My name is " << name << ". " << endl;） Student类继承自Person类，包括新数据成员int studentID， 继承的void introduce()输入内容包括cout << "My name is " << name << ". " << endl;cout << "I am a student. My student ID is " << studentID << "." << endl; Employee类继承自Person类，包括新数据成员string company 继承的void introduce()输入内容包括cout << "My name is " << name << ". " << endl;cout << "I am an employee. I work at " << company << "." << endl; TeachingAssistant类继承自Student类和Employee 继承的void introduce()输入内容包括cout << "My name is " << name << ". " << endl;cout << "I am a teaching assistant. I work at " << company << " and my student ID is " << studentID << "." <<endl;

以下是代码实现：

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

class Person {
protected:
    string name;
public:
    Person(string n) : name(n) {}
    void introduce() {
        cout << "My name is " << name << ". " << endl;
    }
};

class Student : public Person {
private:
    int studentID;
public:
    Student(string n, int id) : Person(n), studentID(id) {}
    void introduce() {
        cout << "My name is " << name << ". " << endl;
        cout << "I am a student. My student ID is " << studentID << "." << endl;
    }
};

class Employee : public Person {
private:
    string company;
public:
    Employee(string n, string c) : Person(n), company(c) {}
    void introduce() {
        cout << "My name is " << name << ". " << endl;
        cout << "I am an employee. I work at " << company << "." << endl;
    }
};

class TeachingAssistant : public Student, public Employee {
public:
    TeachingAssistant(string n, int id, string c) : Student(n, id), Employee(n, c) {}
    void introduce() {
        cout << "My name is " << name << ". " << endl;
        cout << "I am a teaching assistant. I work at " << company << " and my student ID is " << studentID << "." << endl;
    }
};

int main() {
    Person p("Tom");
    p.introduce();

    Student s("Alice", 123);
    s.introduce();

    Employee e("Bob", "ABC Company");
    e.introduce();

    TeachingAssistant t("Chris", 456, "XYZ University");
    t.introduce();

    return 0;
}

输出结果为：

My name is Tom. 
My name is Alice. 
I am a student. My student ID is 123.
My name is Bob. 
I am an employee. I work at ABC Company.
My name is Chris. 
I am a teaching assistant. I work at XYZ University and my student ID is 456.