C++构造函数异常（二）

 1 class B{
 2 
 3 public:
 4     B(){
 5         age = 0;
 6         cout << "construct B default" << endl;
 7         throw 0;//抛出异常
 8     }
 9 
10     ~B(){
11         cout << "destructor B ,age=" << age << endl;
12     }
13 private:
14     int age;
15 };
16 
17 class C{
18 public:
19     C(){
20         //得到指定范围[m,n]的随机数：r = rand()%(n - m + 1) + m;
21         int r = rand()%(8-0)+0;
22         num = r;
23         cout << "constuctor C ,num = " << num << endl;
24         
25     }
26     ~C(){
27         cout << "destructor C, num = " << num << endl;
28     }
29 private:
30     int num;
31 };
32 
33 class D:public C, public B{
34 
35 public:
36     D(){
37         cout << "constructor D " << endl;
38     }
39 
40     ~D(){
41         cout << "destrcutor D" << endl;
42     }
43 };
44 
45 int main(void){
46 
47 
48     D d;
49 
50 }