public member function

std::moneypunct::frac_digits

int frac_digits() const;

Return fractional digits

Returns the number of digits after the decimal separator sign, if any.

During its operation, the version of this function in the generic template simply calls the virtual protected member do_fracdigits, which is the member function in charge of performing the actions described above.

Parameters

none

Return value

The string used to represent a positive sign in monetary expressions.
frac_digits is a member alias of basic_string<charT>, where charT is the first template parameter (i.e., the facet's character type).

Example

// moneypunct example
#include <iostream>
#include <locale>
using namespace std;

// overload inserter to print patterns:
ostream& operator<< (ostream& os, moneypunct<char>::pattern p)
{
  for (int i=0; i<4; i++)
    switch (p.field[i]) {
      case moneypunct<char>::space: cout << "space "; break;
      case moneypunct<char>::symbol: cout << "symbol "; break;
      case moneypunct<char>::sign: cout << "sign "; break;
      case moneypunct<char>::value: cout << "value "; break;
    }
  return os;
}

int main ()
{
  locale mylocale;
  const moneypunct<char>& mp = use_facet<moneypunct<char> >(mylocale);

  cout << "moneypunct in locale \"" << mylocale.name() << "\":\n";

  cout << "decimal_point: " << mp.decimal_point() << endl;
  cout << "thousands_sep: " << mp.thousands_sep() << endl;
  cout << "grouping: " << mp.grouping() << endl;
  cout << "curr_symbol: " << mp.curr_symbol() << endl;
  cout << "positive_sign: " << mp.positive_sign() << endl;
  cout << "negative_sign: " << mp.negative_sign() << endl;
  cout << "frac_digits: " << mp.frac_digits() << endl;
  cout << "pos_format: " << mp.pos_format() << endl;
  cout << "neg_format: " << mp.neg_format() << endl;
  
  return 0;
}

Possible output:


moneypunct in locale "C":
decimal_point:
thousands_sep:
grouping:
curr_symbol:
positive_sign:
negative_sign: -
frac_digits: 0
pos_format: symbol sign value
neg_format: symbol sign value