自定义异常类并使用

#ifndef _TEST_H
#define _TEST_H
#include <iostream>
using namespace std;

void MyFunc(void);

class CTest
{
public:
	CTest(char *str){err = str;};
	~CTest(){};
	char *err;
	const char* ShowReason() const
	{
		return err;
	}
};

class CDotorDemo
{
public:
	CDotorDemo();
	~CDotorDemo();
};
CDotorDemo::CDotorDemo()
{
	cout << "Constructing CDotorDemo" << endl;
}
CDotorDemo::~CDotorDemo()
{
	cout << "Destructin CDotorDemo" << endl;
}

void MyFunc(void)
{
	CDotorDemo D;
	cout << "In MyFunc. Throwing CTest exception" << endl;
	throw CTest("error!!!!!!");
}

int main()
{
	try
	{
		cout << "In Try block, calling MyFuc()" << endl;
		MyFunc();
	}
	catch (CTest E)
	{
		cout << "In catch handler" << endl;
		cout << "Cauth CTest exception type" << endl;
		cout << E.ShowReason() << endl;
	}
	catch (char *str)
	{
		cout << "Caught some other exception" << str << endl;
	}
	
	cout << "Back in Main. Exception resumes here" << endl;
}

#endif //_TEST_H