long double readMoney(istream& in, bool intl = false) {
long double val;
// Create a reader facet
const money_get<char>& moneyReader =
use_facet<money_get<char> >(in.getloc());
// End marker
istreambuf_iterator<char> end;
// State variable for detecting errors
ios_base::iostate state = 0;
moneyReader.get(in, end, intl, in, state, val);
// failbit will be set if something went wrong
if (state != 0 && !(state & ios_base::eofbit))
throw "Couldn't read money!\n";
return(val);
}
void translateDate(istream& in, ostream& out) {
// Create a date reader
const time_get<char>& dateReader =
use_facet<time_get<char> >(in.getloc( ));
// Create a state object, which the facets will use to tell
// us if there was a problem.
ios_base::iostate state = 0;
// End marker
istreambuf_iterator<char> end;
tm t; // Time struct (from <ctime>)
// Now that all that's out of the way, read in the date from
// the input stream and put it in a time struct.
dateReader.get_date(in, end, in, state, &t);
// Now the date is in a tm struct. Print it to the out stream
// using its locale. Make sure you only print out what you
// know is valid in t.
if (state == 0 || state == ios_base::eofbit) {
// The read succeeded.
const time_put<char>& dateWriter =
use_facet<time_put<char> >(out.getloc( ));
char fmt[] = "%x";
if (dateWriter.put(out, out, out.fill( ),
&t, &fmt[0], &fmt[2]).failed( ))
cerr << "Unable to write to output stream.\n";
} else {
cerr << "Unable to read cin!\n";
}
}
