#includeIn the above example, we create a `Value` object with an unsigned integer value of `123u`. We then check if the value is an unsigned integer using the `isUInt` method. Since the value is an unsigned integer, the output of the program is "Value is an unsigned integer". Based on the `#include` directive used in the code snippet above (`#include "json/json.h"`), it appears that the example code is using the jsoncpp library.#include "json/json.h" using namespace std; using namespace Json; int main() { Value val(123u); if (val.isUInt()) { cout << "Value is an unsigned integer" << endl; } else { cout << "Value is not an unsigned integer" << endl; } return 0; }