using namespace std;
    using namespace youngJSON;

    JsonReader reader(etUTF8);

    try {
        auto value = reader.read(s);
        cout << value->toString() << endl;
        cout << value->toCompactString() << endl;
    } catch (invalid_argument& e) {
        cout << "range_error exception occurred!" << endl;
    } catch (invalid_format_error& e) {
        cout << "invalid_format_error exception occurred!" << endl;
    }

    using namespace std;
    using namespace youngJSON;

    ValueObject root;

    root.add("key1", ValueNumber(3));
    root.add("key2", ValueNull());
    root.add("key3", ValueTrue());
    root.add("key4", ValueFalse());

    root.add("key5", ValueString("aaa"));
    auto& va1 = root.add("key6", ValueArray());
    {
        va1.add(ValueNumber(5));
        auto& vo1 = va1.add(ValueObject());
        vo1.add("key6_1", ValueString("bbb"));
    }
    auto& vo2 = root.add("key7", ValueObject());
    {
        vo2.add("key7_1", ValueNumber(3.1e3));
        vo2.add("key7_2", ValueNumber(2));
    }

    cout << root.toString() << endl;
    cout << root.toCompactString() << endl;

{
  "key1": 3,
  "key2": null,
  "key3": true,
  "key4": false,
  "key5": "aaa",
  "key6": [
    5,
    {
      "key6_1": "bbb"
    }
  ],
  "key7": {
  "key7_1": 3100.000000,
  "key7_2": 2
  }
}
{"key1":3,"key2":null,"key3":true,"key4":false,"key5":"aaa","key6":[5,{"key6_1":"bbb"}],"key7":{"key7_1":3100.000000,"key7_2":2}}