Handling Nested Exceptions with Multiple Catch Blocks

Yes, you can use multiple catch blocks to handle nested exceptions. The catch blocks will be tried in order, and the first one that matches the exception type will be executed.

For example:

1try {
2  try {
3    throw std::runtime_error{"Inner Exception"};
4  } catch (...) {
5    std::throw_with_nested(
6      std::logic_error{"Outer Exception"});
7  }
8} catch (std::logic_error& e) {
9  std::cout << "Caught logic_error: "
10    << e.what() << '\n';
11  // Rethrow the std::runtime_error if desired
12  // std::rethrow_if_nested(e);
13}

1Caught logic_error: Outer Exception

In this example, the std::logic_error is caught first because it's the type we directly threw. When we call std::rethrow_if_nested(e), it then throws the nested std::runtime_error, which is caught by the next matching catch block.