Exception Handling in C++

This page might seem like it duplicates some of what we have just seen, but it is valuable because it gives a different perspective on the topic. Read chapter 1 on pages 15-60.

Exception matching

Catching any exception

Sometimes you want to create a handler that catches any type of exception. You do this using the ellipsis in the argument list:

   catch(...) {
  cout << "an exception was thrown" << endl;
}

Because an ellipsis catches any exception, you'll want to put it at the end of your list of handlers to avoid pre-empting any that follow it.

The ellipsis gives you no possibility to have an argument, so you can't know anything about the exception or its type. It's a "catchall." Such a catch clause is often used to clean up some resources and then rethrow the exception.