demo_inheritance_3_b.cpp

对于一个初涉VC＋＋的人来书

//***************************************************
// 保护继承类
//***************************************************

#include <iostream>
#include <string>

using namespace std;

class Student
{
public:
	void get_value() { cin>>num>>name>>sex; }
	void display();
protected:
	int num;
	string name;
	char sex;
};   

void Student::display()
{
	cout<<"num: "<<num<<endl;
	cout<<"name: "<<name<<endl;
	cout<<"sex: "<<sex<<endl;
}

class Student1: protected Student
{
public:
	void get_value1();
	void display1();
private:
	int age;
	string addr;
};

void Student1::get_value1()
{
	cin>>num>>name>>sex;

	cin>>age>>addr;
}

void Student1::display1()
{
	cout<<"num: "<<num<<endl;
	cout<<"name: "<<name<<endl;
	cout<<"sex: "<<sex<<endl;

	cout<<"age: "<<age<<endl;  
	cout<<"address: "<<addr<<endl;
}
 
int main()
{
	Student1 stud1;

	stud1.get_value1();
	stud1.display1();

	return 0;
}