1#include <iostream> 2#include <nlohmann/json.hpp> 3 4using json = nlohmann::json; 5 6namespace ns 7{ 8// a simple struct to model a person 9struct person 10{ 11 std::string name; 12 std::string address; 13 int age; 14}; 15} // namespace ns 16 17namespace ns 18{ 19void to_json(json& j, const person& p) 20{ 21 j = json{ {"name", p.name}, {"address", p.address}, {"age", p.age} }; 22} 23} // namespace ns 24 25int main() 26{ 27 ns::person p = {"Ned Flanders", "744 Evergreen Terrace", 60}; 28 29 json j = p; 30 31 std::cout << j << std::endl; 32} 33