Question

设计Person类和Student类，Student类继承自Person类，要求写出两个类的无参和有参的构造函数，设计两个类

Answer 1

#include<iostream>
#include <string>
using namespace std;
class person
{
public:
person();
person(string name,int age);
void display();

protected:
string name;
int age;

};

person::person(){}

person::person(string name,int age)
{
this->name=name;
this->age=age;
}

void person::display()
{
cout<<this->name<<" "<<this->age<<endl;
}

class student : public person
{
public:
student();
student(string name,int age,int num);
void display();
void setnum(int num);

private:
int num;
};

student::student(){}

student::student(string name,int age,int num):person(name,age)
{
this->num=num;
}

void student::setnum(int num)
{
this->num=num;
}

void student::display()
{
person::display();
cout<<this->num<<endl;

}

int main(int argc, char* argv[])
{

person p1("suyuanming",24);
p1.display();

student std1("suyuanming",24,13);
std1.display();
return 0;
}

Answer 2

class Person
{
String id,name;
Person()
{}
Person(String id,name)
{
this.id=id;
this.name=name;
}
}

public class Student extends Person
{}