32.2 An Example with a User-Defined Type

Let us work through a complete example with the following date class as the user-defined type:

class date {
public:
  date(int d, int m, int y);
  date(const tm& t);
  date();
  // more constructors and useful member functions
private:
  std::tm tm_date;
};

This class has private data members of type std::tm, which is the time structure defined in header file <ctime>.