1 #include <iostream>
 2 #include <string.h>
 3 #include <unistd.h>
 4 
 5 using namespace std;
 6 
 7 class Human{
 8 private:
 9     int a;
10 public:
11     virtual void eating(void) = 0;
12     virtual void wearing(void) = 0;
13     virtual void driving(void) = 0;
14     virtual ~Human() {cout <<"~Human()"<<endl;}
15     virtual Human *test (void){cout<<"Human's test"<<endl;return this;}
16     
17 };
18 class Englishman : public Human{
19 public:
20     void eating(void){cout<<"use knife to eat"<<endl;}
21     void wearing(void){cout<<"wear english style"<<endl;}
22     void driving(void){cout<<"drive english car"<<endl;}
23     virtual ~Englishman(){cout<<"~Englishman()"<<endl;}
24     virtual Englishman* test(void){cout<<"Englishman's test"<<endl;return this;}
25 
26 
27 };
28 class Chinese : public Human{
29 public:
30     void eating(void){cout<<"use chopsticks to eat"<<endl;}
31     void wearing(void){cout<<"wear chinese style"<<endl;}
32     //void driving(void){cout<<"drive chinese car"<<endl;} 
33     virtual ~Chinese(){cout<<"~Chinese()"<<endl;}
34     virtual Chinese* test(void){cout<<"Chinese's test"<<endl;return this;}
35 
36 };
37 class Guangximan : public Chinese{
38     //void driving(void){cout<<"drive chinese car"<<endl;} 
39 };
40 int main(int argc,char ** argv)
41 {
42     Englishman e;
43     Chinese c;
44 
45     return 0;
46 }

 1 #include <iostream>
 2 #include <string.h>
 3 #include <unistd.h>
 4 
 5 using namespace std;
 6 
 7 class Human{
 8 private:
 9     int a;
10 public:
11     virtual void eating(void) = 0;
12     virtual void wearing(void) = 0;
13     virtual void driving(void) = 0;
14     virtual ~Human() {cout <<"~Human()"<<endl;}
15     virtual Human *test (void){cout<<"Human's test"<<endl;return this;}
16     
17 };
18 class Englishman : public Human{
19 public:
20     void eating(void){cout<<"use knife to eat"<<endl;}
21     void wearing(void){cout<<"wear english style"<<endl;}
22     void driving(void){cout<<"drive english car"<<endl;}
23     virtual ~Englishman(){cout<<"~Englishman()"<<endl;}
24     virtual Englishman* test(void){cout<<"Englishman's test"<<endl;return this;}
25 
26 
27 };
28 class Chinese : public Human{
29 public:
30     void eating(void){cout<<"use chopsticks to eat"<<endl;}
31     void wearing(void){cout<<"wear chinese style"<<endl;}
32     void driving(void){cout<<"drive chinese car"<<endl;} 
33     virtual ~Chinese(){cout<<"~Chinese()"<<endl;}
34     virtual Chinese* test(void){cout<<"Chinese's test"<<endl;return this;}
35 
36 };
37 int main(int argc,char ** argv)
38 {
39     Englishman e;
40     Chinese c;
41 
42     return 0;
43 }