#include <iostream>
#include <fstream>

using namespace std;

typedef unsigned char byte;
typedef signed char sbyte;

struct observation
{ short int year;
  byte      month, day;
  short int mint, avgt, maxt;
  sbyte     snow, rain;
  byte      wind; };

int main()
{ if (sizeof(observation) != 14)
  { cerr << "Look out! sizeof(observation) is " <<
            sizeof(observation) << ", not 14\n";
    exit(1); }
  cout << "OK so far\n";

  ifstream dfin("data.txt");
  if (dfin.fail())
  { cerr << "Can't open data.txt\n";
    exit(1); }

  fstream bfout("data.dat", ios::out | ios::binary | ios::trunc);
  if (bfout.fail())
  { cerr << "Can't create data.dat\n";
    exit(1); }

  int num = 0;
  while (true)
  { observation ob;
    int year, month, day, mint, avgt, maxt, snow, rain, wind;
    dfin >> year >> month >> day >> mint >> avgt >> maxt >>
            snow >> rain >> wind;
    if (dfin.fail())
      break;

    ob.year = year;
    ob.month = month;
    ob.day = day;
    ob.mint = mint;
    ob.avgt = avgt;
    ob.maxt = maxt;
    ob.snow = snow;
    ob.rain = rain;
    ob.wind = wind;
    bfout.write((char *) & ob, sizeof(ob));

    num += 1; }
  cout << num << " records transferred\n";

  bfout.close();
  dfin.close(); }