 1 #include <stdio.h>
 2 #include <memory.h>
 3 class Test 
 4 { 
 5 public: 
 6         Test() 
 7         { 
 8                 memset(this,0,sizeof(*this)); 
 9         } 
10         int s; 
11         void test() 
12         { 
13                 printf("test()\n"); 
14         }
15         void test1() 
16         { 
17                 printf("test1():%d\n",this->s); 
18         }
19         virtual void test2() 
20         { 
21                 printf("test2()\n"); 
22         }
23 }; 
24 
25 int main() 
26 { 
27         Test s ;
28         s.test(); 
29         s.test1(); 
30         s.test2(); 
31         return 0; 
32 }