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std::moneypunct::thousands_sep, std::moneypunct::do_thousands_sep

From cppreference.com
 
 
 
 
Defined in header <locale>
public:
char_type thousands_sep() const;
(1)
protected:
char_type virtual do_thousands_sep() const;
(2)

1) public member function, calls the member function do_thousands_sep of the most derived class.

2) returns the character to be used as the separator between digit groups when parsing or formatting the integral parts of monetary values.

[edit] Return value

The object of type char_type to use as the thousands separator. The standard specializations of std::moneypunct return ā€™,ā€™ and Lā€™,ā€™.

[edit] Example

#include <locale>
#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

[edit] See also

[virtual]
provides the numbers of digits between each pair of thousands separators
(virtual protected member function)