Open file

static ifstream& openFileForRead(string fileName)
{
	ifstream inFile;
	inFile . open ( fileName.c_str(), std::ifstream::in );
   if ( !inFile.good () )
    {
       fprintf(stderr,"Couldn't open file '%s'...\n",fileName.c_str());
       inFile.close();
	   return inFile;
    }
   return inFile;
}