要求：做一个基类Data，数据成员name，派生类教师teacher和学生student继承Data的name数据成员，此外教师新增薪水sal数据成员，学生新增学号id数据成员，派生类研究生Postgard继承学生,新增系别dn数据成员，派生类教师研究生Tpost继承研究生和教师,不新增数据成员

在所有类里都加入函数成员Point（）用来打印所有信息

代码详细注解：

#define _CRT_SECURE_NO_WARNINGS 1
#include<iostream>
#include<string>
using namespace std;class Data {//基类
public:Data(string name):name(name) {}//数据成员初始化string Name() { return name; }//私有成员对外部接口void Print() {cout << "name = " << Name() << endl;//外部接口作为打印值，这里也可以用name私有成员}
private:string name;
};
class Teacher :virtual public Data{//虚基类，名字是所有类里公有的，所以只需要继承一份
public://子类的构造函数，给出所有基本信息。Teacher(string name, float sal = 0) :Data(name),sal(sal) {}//虚基类若不是默认函数，则在继承的子类里的构造函数也要给出基类的初始化float Sal() { return sal; }void Print() {cout << " name = " << Name() << " sal = " << Sal() << endl;}
private:float sal;
};
class Student :virtual public Data{
public://同teacher类的注释Student(string name, int id = 0) :Data(name),id(id) {}int Id() { return id; }void Print() {cout << " name = " << Name() << " id = " << Id() << endl;}
private:int id;
};
class Postgrad :virtual public Student {
public://构造函数给出子类继承父类和自身本身的信息Postgrad(string name, int id, string dn) :Data(name), Student(name, id),dn(dn) {}string Dn() { return dn; }void Print() {cout << " name = " << Name() << " dn = " << Dn() << endl;}
private:string dn;
};
class Tpost :virtual public Teacher, virtual public Postgrad {
public:Tpost(string name, int id, string dn, float sal) :Data(name), Postgrad(name,id,dn), Teacher(name, sal) ,Student(name,id){}void Print() {//打印继承的父类函数，需要给出命名空间来限定是哪一个打印函数，//但这里会造成名字打印两次的尴尬，不知道怎么处理Postgrad::Print();Teacher::Print();}
};
void test() {/*Data* sp;sp = new Teacher ("李华", 60000);//不可以这样使用new，需要好好去复习。sp->Print();delete sp;sp = new Tpost("张三", 2021463030603,"计算机", 50000);sp->Print();delete sp;*/Tpost t1("zhangsan", 2021463030603, "jisuanji", 50000);t1.Print();Teacher t2("lisi", 60000);t2.Print();
}
int main() {test();
}