继承与派生[练习]

 1 #include<iostream>
 2 #include<string>
 3 using namespace std;
 4 class stud
 5 {
 6     public:
 7     stud(int xh=150209,string xm="kuangdaoyizhimei");
 8     ~stud()
 9     {
10         cout<<"xigou"<<endl;
11     }
12     void shuchu();
13     void shuru();
14     private:
15     int xuehao ;
16     string xingming;
17 };
18 stud::stud(int xh,string xm)
19 {
20     xuehao=xh;
21     xingming=xm;
22     cout<<"gouzao"<<endl;
23 }
24 void stud::shuru()
25 {
26     cin>>xuehao>>xingming;
27 }
28 void stud::shuchu()
29 {
30     cout<<"xuehao:"<<xuehao<<endl<<"xingming:"<<xingming<<endl;
31 }
32 class paisheng:public stud
33 {
34     public:
35     paisheng(int,int ,string);
36     ~paisheng();
37     void shuchu();
38     void shuru();
39     private:
40     int nianling;
41 };
42 paisheng::paisheng(int nl,int xh,string xm):stud(xh,xm)
43 {
44     nianling=nl;
45     cout<<"paishenggouzao"<<endl;
46 }
47 paisheng::~paisheng()
48 {
49     cout<<"paishengxigou"<<endl;
50 }
51 void paisheng::shuru()
52 {
53     cin>>nianling;
54 }
55 void paisheng::shuchu()
56 {
57     cout<<"nianling:"<<nianling<<endl;
58     stud::shuchu();
59 }
60 class paisheng1:public paisheng
61 {
62     public:
63     void shuchu();
64     paisheng1(int nl,int xh,string xm,string xb);
65     ~paisheng1();
66     private:
67     string xingbie;
68 };
69 paisheng1::paisheng1(int nl,int xh,string xm,string xb):paisheng(nl,xh,xm)
70 {
71     cout<<"paisheng1gouzao"<<endl;
72     xingbie=xb;
73 }
74 paisheng1::~paisheng1()
75 {
76     cout<<"paisheng1xigou"<<endl;
77 }
78 void paisheng1::shuchu()
79 {
80     cout<<"xingbie:"<<xingbie<<endl;
81     paisheng::shuchu();
82 }
83 int main()
84 {
85     paisheng1 std(20,816249,"zhengrongjun","nan");
86     std.shuchu();
87     return 0;
88 }
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