#include <iostream>
#include "stdio.h"
#include "string"
using namespace std;
class Student 
{
protected:
	string name_;
	int age_;
public:
	void setStudent(string name, int age)
	{
		name_ = name;
		age_ = age;
	}
	void printf()
	{
		cout << "姓名： " << name_ << "  年龄： " << age_ << endl;
	}
	int get_age()
	{
		return age_;
	}
	string get_name()
	{
		return name_;
	}
};
class Collagestudent:public Student 
{
private:
	string major_;
public:
	void setCStudent(string name, int age, string major)
	{
		name_ = name;
		age_ = age;
		major_ = major;
	}
	void printf()
	{
		cout << "姓名： " << name_ << "  年龄： " << age_ << "  专业： "<<major_<<endl;
	}
};
void work(Student &s)
{
	if (s.get_age() >=18)
		cout <<s.get_name()<< "达到法定工作年龄" << endl;
	else
		cout << s.get_name() << "未达到法定工作年龄" << endl;
}

int main()
{
	Student stu;
	stu.setStudent("李明",15);
	stu.printf();
	Collagestudent cstu;
	cstu.setCStudent("李雷", 18, "计算机");
	cstu.printf();
	Student stu1 = cstu;//将派生类对象赋值给基类对象
	stu1.printf();
	Student& rs = cstu;//将派生类的对象初始化基类的引用
	rs.printf();
	Student* ps = &cstu;//可以将派生类对象的地址赋给基类指针
	ps->printf();
	work(stu);//使用基类对象作为形参
	work(cstu);//使用派生类对象作为形参

}