1 #include <iostream>
2 #include <exception>
3 using namespace std;
4
5 //继承自带的异常
6 class sizeerror :public exception
7 {
8 public:
9 sizeerror() :exception("尺寸大小异常")
10 {
11
12 }
13
14 const char *what()
15 {
16 char *p = "尺寸大小异常";
17 cout << "尺寸大小异常" << endl;
18 return p;
19 }
20 };
21
22 class print3d
23 {
24 public:
25 print3d(double size)
26 {
27 if (size > 100)
28 {
29 throw &sizeerror();
30 }
31 }
32 };
33 void main()
34 {
35 try
36 {
37 print3d p(300);
38 }
39 catch (sizeerror *p)
40 {
41 p->what();
42 }
43 cin.get();
44 }
