| Defined in header <locale> | ||
|---|---|---|
public: std::string grouping() const; | (1) | |
protected: virtual std::string do_grouping() const; | (2) |
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::numpunct return an empty string, indicating no grouping. Typical groupings (e.g. the en_US locale) return "\003".
Example
#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
| [virtual] | provides the character to use as thousands separator (virtual protected member function) |
| [virtual] | provides the character to use as decimal point (virtual protected member function) |
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