#include <iostream>
#include <fstream>
#include <climits>
#include <cstring>

int main()
  {
   unsigned Px=(unsigned)-1;
   double Py=-1;
   char *Ps=new char[1];
   Ps[0]=0;
   while(true)
     {
      unsigned X;
      double Y;
      char *S;
      fstream f;
      f.open("liczba.bin",ios::in|ios::binary);
      f.read((char*)&X,sizeof(X));
      f.read((char*)&Y,sizeof(Y));

      unsigned DL;
      f.read((char*)&DL,sizeof(DL));
      S=new char[DL+1];
      f.read(S,DL);
      S[DL]=0;

      f.close();
      if((X==Px)&&(Y==Py)&&(!strcmp(S,Ps))) continue;
      cout<<"X="<<X<<" Y="<<Y<<" S="<<S<<endl;
      Px=X;
      Py=Y;
      delete[] Ps;
      Ps=S;
     }
   delete[] Ps;
   return 0;
  }