1 #include <iostream> 2 #include <nlohmann/json.hpp> 3 4 using json = nlohmann::json; 5 main()6int main() 7 { 8 try 9 { 10 // calling at() for an invalid index 11 json j = {1, 2, 3, 4}; 12 j.at(4) = 10; 13 } 14 catch (json::out_of_range& e) 15 { 16 // output exception information 17 std::cout << "message: " << e.what() << '\n' 18 << "exception id: " << e.id << std::endl; 19 } 20 } 21