#ifndef LPOINT_H
#define LPOINT_H
///////////////////////////////////////////////////////////////
//  lpoint.h   -  represents a labeled two dimensional point //
//  ver 1.2                                                  //
//                                                           //
//  Language:     Visual C++, ver 6.0                        //
//  Platform:     Dell OptiPlex, Win NT 4.0                  //
//  Application:  HW#3, ECS500, Su 99                        //
//  Author:       Jim Fawcett, Instructor, CST 2-187         //
//                Syracuse Univ, (315) 443-3948              //
//                fawcett@ecs.syr.edu                        //
///////////////////////////////////////////////////////////////
/* 
    Class Operations:
    =================
    Models a labeled point in a plane.  

    Public Interface:
    =================
    lpoint p;           void construction
    lpoint p(1.5,2.3);  construction with coordinate values
    p.x() = -2.3;       modify p's x coordinate
    p.y() = 7.2;        modify p's y coordinate
    double x = p.x();   read p's x coordinate
    double y = p.y();   read p's y coordinate
    p1 += p2;           add p2's coordinates to p1, modifying p1
    p1  p2 + p3;        assign the sum of p2 and p3 coordinates to p1
    cout << p1;         send lpoint p1 to standard output
    cin  >> p1;         get lpoint p1 from standard input

*/
///////////////////////////////////////////////////////////////
//  build process                                            //
///////////////////////////////////////////////////////////////
//  files required:                                          //
//    lpoint.h, lpoint.cpp                                   //
//                                                           //
//  compiler command:                                        //
//    cl /GX /DTEST_POINT  lpoint.cpp                        //
///////////////////////////////////////////////////////////////
/*
    Maintenance History:
    ====================
    ver 1.0 : 24 Jun 99
      - first release
    ver 1.1 : 03 Jul 99
      - added insertion and extraction operators
    ver 1.2 : 06 Jul 99
      - removed insertion and extraction operators from lpoint
        as they are not needed, can use those from point
      - fixed bug in lpoint::get(...) so it can collect labels
        with embedded spaces
      - removed using namespace std from this header file

*/

//
#include <iostream>
#include <string>
#include "point.h"

class lpoint : public point {

  public:
    lpoint(double x=0, double y=0, const std::string &label="");
    lpoint operator+(const lpoint &lp);
    virtual void put(std::ostream &out) const;
    virtual void get(std::istream &in);
    std::string& label();

  private:
    std::string _label;
};

//----< access label >-----------------------------------------

inline std::string& lpoint::label() { return _label; }

//----< display point >----------------------------------------
//
//  display labeled points of the form (1.4,-3.3,"lpoint p")
//
inline void lpoint::put(std::ostream &out) const {

  out << '(' << _x << ',' << _y << ',' << _label << ')';
}

//----< get points from stream >-------------------------------
//
//  get labeled points of the form (1.4,-3.3,"lpoint p")
//
inline void lpoint::get(std::istream &in) {

  char ch;
  in >> ch >> _x >> ch >> _y >> ch;
  _label.erase();
  in >> ch;
  do {
    _label += ch;
    in.get(ch);
  } while(ch != ')');
}

#endif