使用cpp定义一个基类person类有姓名性别年龄在由基类派生出student类和teacher类，学生类增加学号，班级，专业和入学成绩，教师类增加工号，职称和工资

可以使用以下代码定义一个基类person类和由基类派生出的student类和teacher类：

#include <string>

class person {
public:
    person(const std::string& name, const std::string& gender, int age)
        : name_(name), gender_(gender), age_(age) {}

    std::string name() const { return name_; }
    std::string gender() const { return gender_; }
    int age() const { return age_; }

private:
    std::string name_;
    std::string gender_;
    int age_;
};

class student : public person {
public:
    student(const std::string& name, const std::string& gender, int age,
            const std::string& student_id, const std::string& class_name,
            const std::string& major, double admission_score)
        : person(name, gender, age),
          student_id_(student_id),
          class_name_(class_name),
          major_(major),
          admission_score_(admission_score) {}

    std::string student_id() const { return student_id_; }
    std::string class_name() const { return class_name_; }
    std::string major() const { return major_; }
    double admission_score() const { return admission_score_; }

private:
    std::string student_id_;
    std::string class_name_;
    std::string major_;
    double admission_score_;
};

class teacher : public person {
public:
    teacher(const std::string& name, const std::string& gender, int age,
            const std::string& teacher_id, const std::string& title, double salary)
        : person(name, gender, age),
          teacher_id_(teacher_id),
          title_(title),
          salary_(salary) {}

    std::string teacher_id() const { return teacher_id_; }
    std::string title() const { return title_; }
    double salary() const { return salary_; }

private:
    std::string teacher_id_;
    std::string title_;
    double salary_;
};

其中，person类有姓名、性别和年龄三个成员变量，student类在person类的基础上增加了学号、班级、专业和入学成绩四个成员变量，teacher类在person类的基础上增加了工号、职称和工资三个成员变量。