how to catch unknown exception and print it

Question

I have some program and everytime I run it, it throws exception and I don't know how to check what exactly it throws, so my question is, is it possible to catch exception and print it (I found rows which throws exception) thanks in advance

Answer 1

If it derives from std::exception you can catch by reference:

try {     // code that could cause exception } catch (const std::exception &exc) {     // catch anything thrown within try block that derives from std::exception     std::cerr << exc.what(); } 

But if the exception is some class that has is not derived from std::exception, you will have to know ahead of time it's type (i.e. should you catch std::string or some_library_exception_base).

You can do a catch all:

try { } catch (...) { } 

but then you can't do anything with the exception.