/** @file list4001.cpp */
/** Listing 40-1. Rewriting generate_id to Use the Function Call Operator */
#ifndef GENERATE_ID_HPP_
#define GENERATE_ID_HPP_

/// Class for generating a unique ID number.
class generate_id
{
public:
  generate_id() : counter_(0) {}
  long operator()();
private:
  short counter_;
  static short prefix_;
  static long int const max_counter_ = 32767;
};

#endif