①定义基类person,数据成员name,sex,age,构造函数,析构函数,输出name,sex,age的函数display()。
②定义公有派生类student,数据成员:num,构造函数,析构函数,输出name,sex,age,num的函数display()。
③ 主函数定义并使用student 对象stu。
#include<iostream>#include<string>using namespace std;class person{//基类public:person() {//构造函数cout << "Please enter the name,sex and age:" << endl;cin >> name >> sex>> age;cout<<endl;}~person() {}//析构函数void display() {//输出函数cout << "This person's information: "<<name<<" "<<sex<<" "<<age;}private:string name;string sex;int age;};class student :public person {//公有派生类public:student() {cout << "Please enter the student number of person:" << endl;cin >> num;cout << endl;}~student() {}void display() {//student类信息输出函数,先调用了person的输出函数person::display(); cout << " " << num << endl;}private:int num;};int main() {student stu;stu.display();return 0;}