C++

10.5    The Order in “catch”

With the single catch in main() from Listing 10.2, I caught all possible exceptions in my program. Both std::invalid_argument and ios_base::failure can be converted to the specified std::exception. However, you can also use two separate handlers:

int main() {    try {        //… Code as before …        return 0; // if everything is okay, return ok as well    } catch(std::invalid_argument &exc) {  // first handler        cerr << "Invalid argument: " << exc.what() << "\n";    } catch(std::ios_base::failure &exc) { // second handler        cerr << "File error: " << exc.what() << "\n";    } catch(std::exception &exc) {         // third, very general handler        cerr << "An error occurred: " << exc.what() << "\n";    } catch( ... ) {  // fourth and last handler for the ...