int count_lines (ifstream& thefilename)
{
    char (y);
    int counter = 0 ;

    while (!thefilename.eof()) {
    thefilename.get(y);
        if (y == '\n'){
        counter = counter ++ ;
    }

    }
     if y! = '\n'{
     counter = counter ++ ;
    }

      return 0;

}