1#include <iostream>
2#include <nlohmann/json.hpp>
3
4using json = nlohmann::json;
5
6int main()
7{
8    // create several JSON values
9    json array = {1, 2, 3};
10    json object = {{"A", "a"}, {"B", "b"}};
11    json number = 17;
12    json string = "foo";
13    json null;
14
15    // output values and comparisons
16    std::cout << std::boolalpha;
17    std::cout << array << " == nullptr " << (array == nullptr) << '\n';
18    std::cout << object << " == nullptr " << (object == nullptr) << '\n';
19    std::cout << number << " == nullptr " << (number == nullptr) << '\n';
20    std::cout << string << " == nullptr " << (string == nullptr) << '\n';
21    std::cout << null << " == nullptr " << (null == nullptr) << '\n';
22}
23