C++ catch(std::exception & e ) vs. catch(…)

Question

I know the difference in handling of both of these catches, but what does it take for the ellipse to catch something the std::exception catch wouldn\'t catch?

For ex

Answer 1

As written, the throw statement throws an object whose type is derived from std::exception, so it's caught by the first catch clause. If you change the throw to throw 3; the exception will be caught by the second catch clause, not the first.