| #include <iostream> |
| #include <nlohmann/json.hpp> |
| |
| using json = nlohmann::json; |
| |
| int main() |
| { |
| // create JSON values |
| json j_null; |
| json j_boolean = true; |
| json j_number_integer = -17; |
| json j_number_unsigned = 42u; |
| json j_number_float = 23.42; |
| json j_object = {{"one", 1}, {"two", 2}}; |
| json j_array = {1, 2, 4, 8, 16}; |
| json j_string = "Hello, world"; |
| |
| // call type_name() |
| std::cout << j_null << " is a " << j_null.type_name() << '\n'; |
| std::cout << j_boolean << " is a " << j_boolean.type_name() << '\n'; |
| std::cout << j_number_integer << " is a " << j_number_integer.type_name() << '\n'; |
| std::cout << j_number_unsigned << " is a " << j_number_unsigned.type_name() << '\n'; |
| std::cout << j_number_float << " is a " << j_number_float.type_name() << '\n'; |
| std::cout << j_object << " is an " << j_object.type_name() << '\n'; |
| std::cout << j_array << " is an " << j_array.type_name() << '\n'; |
| std::cout << j_string << " is a " << j_string.type_name() << '\n'; |
| } |