#include #include using json = nlohmann::json; int main() { // create JSON values json j_object = {{"one", 1}, {"two", 2}}; json j_array = {1, 2, 4, 8, 16}; json j_string = "Hellö 😀!"; // call dump() std::cout << "objects:" << '\n' << j_object.dump() << "\n\n" << j_object.dump(-1) << "\n\n" << j_object.dump(0) << "\n\n" << j_object.dump(4) << "\n\n" << j_object.dump(1, '\t') << "\n\n"; std::cout << "arrays:" << '\n' << j_array.dump() << "\n\n" << j_array.dump(-1) << "\n\n" << j_array.dump(0) << "\n\n" << j_array.dump(4) << "\n\n" << j_array.dump(1, '\t') << "\n\n"; std::cout << "strings:" << '\n' << j_string.dump() << '\n' << j_string.dump(-1, ' ', true) << '\n'; // create JSON value with invalid UTF-8 byte sequence json j_invalid = "ä\xA9ü"; try { std::cout << j_invalid.dump() << std::endl; } catch (json::type_error& e) { std::cout << e.what() << std::endl; } std::cout << "string with replaced invalid characters: " << j_invalid.dump(-1, ' ', false, json::error_handler_t::replace) << "\nstring with ignored invalid characters: " << j_invalid.dump(-1, ' ', false, json::error_handler_t::ignore) << '\n'; }