构造与析构函数是否可以是虚函数 

 1 /* 构造与析构的虚函数问题 */
 2 
 3 #include<iostream>
 4 
 5 using namespace std;
 6 
 7 class ye
 8 {
 9 public:
10     ye()// 禁止构造函数是虚函数
11     {
12         p1 = new char[1024*1024*100];//100M
13         cout << "ye来了" << endl;
14     }
15 
16     virtual ~ye()// 析构函数可以是虚函数，解决内存泄露问题
17     {
18         delete []p1;
19         cout << "ye走了" << endl;
20     }
21 
22 protected:
23     char *p1;
24 };
25 
26 
27 class die:public ye
28 {
29 public:
30     die()
31     {
32         p2 = new int[1024*1024*100];//400M
33         cout << "die来了" << endl;
34     }
35 
36     ~die()
37     {
38         delete []p2;
39         cout << "die走了" << endl;
40     }
41 
42 protected:
43     int *p2;
44 };
45 
46 void main()
47 {
48 
49     ye *p = new die;
50     delete p;
51 
52 
53     cin.get();
54 }

 

posted on 2015-06-10 09:53  Dragon-wuxl  阅读(130)  评论(0)    收藏  举报

导航