NAME

std::moneypunct::grouping,do_grouping - std::moneypunct::grouping,do_grouping

Synopsis

Defined in header <locale>
public: (1)
std::string grouping() const;
protected: (2)
virtual std::string do_grouping() const;

1) Public member function, calls the member function do_grouping of the most derived
class.
2) Returns the pattern that determines the grouping of the digits in the monetary
output, with the same exact meaning as std::numpunct::do_grouping

Return value

The object of type std::string holding the groups. The standard specializations of
std::moneypunct return an empty string, indicating no grouping. Typical groupings
(e.g. the en_US locale) return "\003".

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

See also

do_thousands_sep provides the character to use as thousands separator
[virtual] (virtual protected member function)
do_decimal_point provides the character to use as decimal point
[virtual] (virtual protected member function)