1 #include <iostream> 2 #include <nlohmann/json.hpp> 3 4 using json = nlohmann::json; 5 main()6int main() 7 { 8 try 9 { 10 // calling iterator::key() on non-object iterator 11 json j = "string"; 12 json::iterator it = j.begin(); 13 auto k = it.key(); 14 } 15 catch (json::invalid_iterator& e) 16 { 17 // output exception information 18 std::cout << "message: " << e.what() << '\n' 19 << "exception id: " << e.id << std::endl; 20 } 21 } 22