User Defined Exceptions in C++

#include <iostream>
#include <exception>
using namespace std;
 
class Divide_By_Zero_Exception : public exception{
    public:
        const char * what() const throw()
        {
            return "Divide By Zero Exception\n";
        }
};
 
int main()
{
    try
    {
        int a, b;
        cout << "Enter two numbers : ";
        cin >> a >> b;
        // compute a / b
        if (b == 0)
        {
            Divide_By_Zero_Exception d;
            throw d;
        }
        else
        {
            cout << "a / b = " << a/b << endl;
        }
    }
    catch(exception& e)
    {
        cout << e.what();
    }
}

Output:
Enter two numbers : 10 2
a / b = 5
$ a.out
Enter two numbers : 1 0
Divide By Zero Exception