1#include <iostream>
2#include <nlohmann/json.hpp>
3
4using json = nlohmann::json;
5
6int main()
7{
8    // create JSON values
9    json j_null;
10    json j_boolean = true;
11    json j_number_integer = 17;
12    json j_number_float = 23.42;
13    json j_number_unsigned_integer = 12345678987654321u;
14    json j_object = {{"one", 1}, {"two", 2}};
15    json j_array = {1, 2, 4, 8, 16};
16    json j_string = "Hello, world";
17    json j_binary = json::binary({1, 2, 3});
18
19    // call is_object()
20    std::cout << std::boolalpha;
21    std::cout << j_null.is_object() << '\n';
22    std::cout << j_boolean.is_object() << '\n';
23    std::cout << j_number_integer.is_object() << '\n';
24    std::cout << j_number_unsigned_integer.is_object() << '\n';
25    std::cout << j_number_float.is_object() << '\n';
26    std::cout << j_object.is_object() << '\n';
27    std::cout << j_array.is_object() << '\n';
28    std::cout << j_string.is_object() << '\n';
29    std::cout << j_binary.is_object() << '\n';
30}
31