11th Week Practice Item 2.2-Student class to store monitor information (if the base class data member is changed to private)

/* *copyright (c) 2016, *all right reserved, school of computer and Control engineering, Yantai University. * File name: 77.cpp * Author: Dong Kai * Completion Date: May 6, 2016 * version number: v1.0 * * Problem Description: Please complete the definition of member function in class * Input Description: * Program output: Student's information */#include <iostream> using namespace Std;    Class Stu {public:stu (int n,string nam);    void display ();p rivate:int num; String name; };     Stu::stu (int n,string nam) {num=n; Name=nam;     } void Stu::d isplay () {cout<< "Study No.:" <<num<<endl; cout<< "Name:" <<name<<endl; }class studetail:public stu{public://Student NAM, study number n, live ad, his monitor nam1, study number n1 studetail (int n,string nam,int a,string ad,int N1    , string nam1);    void Show ();    void Show_monitor ();p rivate:stu Monitor;    int age; string addr;}; Studetail::studetail (int n,string nam,int n1,string nam1,int a,string AD): Stu (N,nam), monitor (N1,NAM1), age (a), addr (ad    {}void studetail::show () {cout<< "Student information:" <<endl;    Stu::d isplay ();    cout<< "Age:" <<age<<endl;   cout<< "Address:" <<addr<<endl; Cout<<endl;}    void Studetail::show_monitor () {cout<< "Monitor info:" <<endl; Monitor.display ();} int main () {//Student Wang Li, No. 10,010th, 19 years old, lives in Shanghai's Beijing Road, his monitor is Jason, study number 10001 Studetail s (10010, "Wang-li", "1", "Beijing Road,shanghai"    0001, "Li-sun");                       S.show ();                Output Student's data s.show_monitor (); Output sub-object data return 0;}

Summary of Knowledge points:

If you change the base class data member to private, you can take the following two methods:

1. Add two read number and name functions to the base class member function: int getnum{return num;} and string GetName {return name;}

In a derived class

void Studetail::show ()

When the member function is implemented, change to:

2. void studetail::show ()
4. {
6.     cout<<" Student Information: " <<ENDL;&NBSP;&NBSP;
8.     cout<<":  " <<getnum () <<endl;              //output num and name &NBSP;&NBSP;
10.     cout<<" name:  " <<getname () <<endl;   
12.     cout<<" Age:  " <<age<<endl;              //output age &NBSP;&NBSP;
14.     cout<<" address:  " <<addr<<endl<< endl;      //output addr &NBSP;&NBSP;
16. }  

2. Directly call the base class member function directly in the member function.

Learning experience:

To learn how to master some methods, flexible.

11th Week Practice Item 2.2-Student class to store monitor information (if the base class data member is changed to private)