1#include <iostream> 2#include <nlohmann/json.hpp> 3 4using json = nlohmann::json; 5 6int main() 7{ 8 // create a JSON number 9 json value = 17; 10 11 // explicitly getting pointers 12 auto p1 = value.get_ptr<const json::number_integer_t*>(); 13 auto p2 = value.get_ptr<json::number_integer_t*>(); 14 auto p3 = value.get_ptr<json::number_integer_t* const>(); 15 auto p4 = value.get_ptr<const json::number_integer_t* const>(); 16 auto p5 = value.get_ptr<json::number_float_t*>(); 17 18 // print the pointees 19 std::cout << *p1 << ' ' << *p2 << ' ' << *p3 << ' ' << *p4 << '\n'; 20 std::cout << std::boolalpha << (p5 == nullptr) << '\n'; 21} 22