datalogger.h

C语言数值算法程序大全（第二版）,课本文件

//: C04:DataLogger.h
// From "Thinking in C++, 2nd Edition, Volume 2"
// by Bruce Eckel & Chuck Allison, (c) 2003 MindView, Inc.
// Available at www.BruceEckel.com.
// Datalogger record layout
#ifndef DATALOG_H
#define DATALOG_H
#include <ctime>
#include <iosfwd>
#include <string>
using std::ostream;

struct Coord {
  int deg, min, sec;
  Coord(int d=0, int m=0, int s=0)
    : deg(d), min(m), sec(s) {}
  std::string toString() const;
};
ostream& operator<<(ostream&, const Coord&);

class DataPoint {
  std::time_t timestamp; // Time & day
  Coord latitude, longitude;
  double depth, temperature;
public:
  DataPoint(std::time_t ts, const Coord& lat,
            const Coord& lon, double dep, double temp)
    : timestamp(ts), latitude(lat), longitude(lon),
      depth(dep), temperature(temp) {}
  DataPoint() : timestamp(0), depth(0), temperature(0) {}
  friend ostream& operator<<(ostream&, const DataPoint&);
};
#endif // DATALOG_H ///:~