c11-2.cpp

来自「谭浩强先生主编的《C++程序设计》一书的例题及课后习题源代码」· C++ 代码 · 共 40 行

#include <iostream>
#include <string>
using namespace std;
class Student//定义基类Student
{public:
void get_value()
{cin>>num>>name>>sex;}//注意输入与输出的箭头方向
  void display( )
    {cout<<"num: "<<num<<endl;
     cout<<"name: "<<name<<endl;
     cout<<"sex: "<<sex<<endl;}
 private :
   int num;
   string name;
   string sex;
};   

class Student1: private Student//Student1是student的私有派生类
 {public:
void get_value_1()
{cout<<"请输入学号、姓名、性别、年龄和地址"<<endl;
	get_value();
cin>>age>>addr;}
   void display_1()
       {display();
       cout<<"age: "<<age<<endl;          //引用派生类的私有成员，正确
       cout<<"address: "<<addr<<endl;}    //引用派生类的私有成员，正确
  private:
       int age;
       string addr;
 };
 
int main()
 {Student1 stud1;
//stud1.get_value();私有基类的公用函数在派生类中是私有函数，因此此种方法调用有误
stud1.get_value_1();
  stud1.display_1();
  return 0;
}