#include using json = nlohmann::json; int main() { // create JSON objects json j_no_init_list = json::object(); json j_empty_init_list = json::object({}); json j_list_of_pairs = json::object({ {"one", 1}, {"two", 2} }); //json j_invalid_list = json::object({ "one", 1 }); // would throw // serialize the JSON objects std::cout << j_no_init_list << '\n'; std::cout << j_empty_init_list << '\n'; std::cout << j_list_of_pairs << '\n'; }