C++自定义异常实例

发表于

本文通过一个例子演示c++如何自定异常。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
#include <iostream>
#include <exception>
using namespace std;

struct Div0Exception : public exception
{
	const char* what() const throw()
	{
		return "divisor is 0";
	}
};

int divide(int a, int b)
{
	if (b == 0)
		throw Div0Exception();
	return a/b;
}

int main(void)
{
	try {
		divide(10, 0);
	} catch (Div0Exception e) {
		cout<<e.what()<<endl;
	}
	cout<<"测试自定义异常"<<endl;
	return 0;
}