std::moneypunct<CharT,International>::frac_digits,do_frac_digits (3) - Linux Manuals

std::moneypunct<CharT,International>::frac_digits,do_frac_digits: std::moneypunct<CharT,International>::frac_digits,do_frac_digits

NAME

std::moneypunct<CharT,International>::frac_digits,do_frac_digits - std::moneypunct<CharT,International>::frac_digits,do_frac_digits

Synopsis

Defined in header <locale>
public: (1)
int frac_digits() const;
protected: (2)
virtual int do_frac_digits() const;

1) Public member function, calls the member function do_frac_digits of the most derived class.
2) Returns the number of digits to be displayed after the decimal point when printing monetary values

Return value

The number of digits to be displayed after the decimal point. In common U.S. locales, this is the value 2.

Example

// Run this code

  #include <locale>
  #include <iostream>
  #include <iomanip>
  #include <iterator>
  struct space_out : std::moneypunct<char> {
      pattern do_pos_format() const { return { {value, none, none, none} };}
      int do_frac_digits() const { return 0; }
      char_type do_thousands_sep() const { return ' ';}
      string_type do_grouping() const { return "\002";}
  };
  int main()
  {
      std::cout.imbue(std::locale("en_US.UTF-8"));
      std::cout << "american locale: " << std::showbase
                << std::put_money(12345678.0)<< '\n';

      std::cout.imbue(std::locale(std::cout.getloc(), new space_out));
      std::cout << "locale with modified moneypunct: "
                << std::put_money(12345678.0)<< '\n';
  }

Output:

  american locale: $123,456.78
  locale with modified moneypunct: 12 34 56 78