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nlohmannjson/doc/examples/basic_json__value_t.cpp

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#include <iostream>
#include <nlohmann/json.hpp>
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using json = nlohmann::json;
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int main()
{
// create the different JSON values with default values
json j_null(json::value_t::null);
json j_boolean(json::value_t::boolean);
json j_number_integer(json::value_t::number_integer);
json j_number_float(json::value_t::number_float);
json j_object(json::value_t::object);
json j_array(json::value_t::array);
json j_string(json::value_t::string);
// serialize the JSON values
std::cout << j_null << '\n';
std::cout << j_boolean << '\n';
std::cout << j_number_integer << '\n';
std::cout << j_number_float << '\n';
std::cout << j_object << '\n';
std::cout << j_array << '\n';
std::cout << j_string << '\n';
}