#include<iostream>
2 #include<string>
3 using namespace std;
4 class parent{
5 protected:
6 int m_a;
7 int m_b;
8 public:
9 int m_c;
10 void set(int a,int b,int c){
11 m_a = a;
12 m_b = b;
13 m_c = c;
14 }
15 };
16 class child_A:public parent{
17 public:
18 void print(){
19 cout << "m_a=" << m_a << endl;
20 cout << "m_b=" << m_b << endl;
21 cout << "m_c=" << m_c << endl;
22 }
23 };
24 class child_B:protected parent{
25 public:
26 void print(){
27 cout << "m_a=" << m_a << endl;
28 cout << "m_b=" << m_b << endl;
29 cout << "m_c=" << m_c << endl;
30 }
31 };
32 class child_C:private parent{
33 public:
34 void print(){
35 cout << "m_a=" << m_a << endl;
36 cout << "m_b=" << m_b << endl;
37 cout << "m_c=" << m_c << endl;
38 }
39
40 };
41 class child_D:public child_C{
42 };
43 int main(){
44 //child_A a;//public继承
45 //child_B b;//protected 继承
46 //child_C c;//private继承
47 //a.m_c = 100;//100
48 //b.m_c = 100;//100
49 //c.m_c = 100;
50 //a.print();
51 //b.print();
52 //c.print();
53 //cout << endl;
54 //a.set(1,1,1);
55 //b.set(2,2,2);
56 //c.set(3,3,3);
57 child_D d;
58 d.print();
59 d.set(1,2,3);
60 return 0;
61 }
