C/C++---Person类、学生类、教师类和研究生类（多重继承）

【问题描述】
研究生Graduate既有学生Student的属性，又有教师Teacher的属性，通过多重继承说明一个研究生类Graduate。

从前面实验题目完成的Person类派生出Teacher类，新增专业（dept）和月薪（salary）属性，并定义Teacher类的构造函数初始化新增的数据成员，showMe成员函数显示新增的数据成员的值。

再从Person类派生出Student类，新增班级（class）和学号（ID）属性，定义Student类的构造函数初始化新增的数据成员，showMe成员函数显示新增的数据成员的值。

通过“多重继承”说明一个研究生类Graduate，定义Graduate类的构造函数，定义Graduate类的showMe成员函数显示各个数据成员的值。

主函数设计如下，请勿修改：

int main(){undefined

Graduate stu1(“Lisi”,22,‘m’,“College of Informatics”,2000,“2015013”,“S101”);

stu1.showMe();

return 0;

}

提示：
（1）Graduate的父类是Student和Teacher，而Student和Teacher有共同的父类Person，如果是普通继承则姓名、性别和年龄就发生了重复。因此，这一题需要用到虚基类的概念。

（2）注意showMe()成员函数在每个类里都有。

【样例输出】

class: S101
id: 2015013
name: Lisi
sex: m
age: 22
dept: College of Informatics
salary: 2000

代码如下

#include<iostream>
#include<string.h>
using namespace std;
class Person {
    char name[10];
    int age;
    char sex;
public:
    void Register(char *s, int n, char c) {
        strcpy(name,s);
        age = n; sex = (c == 'm' ? 0 : 1);
    }
    char *getName() { return name; }
    char getSex() { return sex == 0 ? 'm' : 'f'; }
    int getAge() { return age; }
    void showMe();
};
class Teacher:virtual public Person
{
public:
    Teacher(char* name,int age,char gender,
            char* profession,int salary);
    void showMe();
    char* getdept(){ return dept; }
    int getsalary(){ return salary; }
private:
    char dept[30];
    int salary;
};
class Student:virtual public Person
{
public:
    Student(char* name,int age,char gender,
            char* stu_id, char* stu_class);
    void showMe();
    char* getClass(){ return myclass; }
    char* getID(){ return ID; }
private:
    char myclass[10];
    char ID[10];
};
class Graduate:public Teacher,public Student
{
public:
    Graduate(char* name,int age,char gender,
             char* profession,int salary,
             char* stu_class,char* stu_id);
    void showMe();
};

Teacher::Teacher(char* name,int age,char gender, char* profession,int salary)
{
    Register(name,age,gender);
    strcpy(dept,profession);
    this->salary = salary;
}

Student::Student(char* name,int age,char gender,char* stu_id, char* stu_class)
{
    Register(name,age,gender);
    strcpy(myclass,stu_class);
    strcpy(ID, stu_id);
}

Graduate::Graduate(char* name,int age,char gender,
                   char* profession,int salary,
                   char* stu_id,char* stu_class):Teacher(name,age,gender,profession,salary),Student(name,age,gender,stu_id,stu_class){}
void Person::showMe()
{
    cout<<"name: "<<getName()<<endl;
    cout<<"sex: "<<getSex()<<endl;
    cout<<"age: "<<getAge()<<endl;
}

void Student::showMe()
{
    cout<<"class: "<<myclass<<endl;
    cout<<"id: "<<ID<<endl;
    cout<<"name: "<<getName()<<endl;
    cout<<"sex: "<<getSex()<<endl;
    cout<<"age: "<<getAge()<<endl;
}

void Teacher::showMe()
{
    cout<<"name: "<<getName()<<endl;
    cout<<"sex: "<<getSex()<<endl;
    cout<<"age: "<<getAge()<<endl;
    cout<<"co: "<<dept<<endl;
    cout<<"salary: "<<salary<<endl;
}

void Graduate::showMe()
{
    cout<<"class: "<<getClass()<<endl;
    cout<<"id: "<<getID()<<endl;
    cout<<"name: "<<getName()<<endl;
    cout<<"sex: "<<getSex()<<endl;
    cout<<"age: "<<getAge()<<endl;
    cout<<"co: "<<getdept()<<endl;
    cout<<"salary: "<<getsalary()<<endl;
}
int main()
{// 主函数设计如下，请勿修改：
  Graduate stu1(const_cast<char*>("Lisi"),22,'m',const_cast<char*>("College of Informatics"),2000,const_cast<char*>("2015013"),const_cast<char*>("S101"));
  stu1.showMe();
  return 0;
}