For the standard specialization of char the function returns ','.
For the standard specialization of wchar_t the function returns L','.
During its operation, the version of this function in the generic template simply calls the virtual protected member do_thousands_sep, which is the member function in charge of performing the actions described above.
Return valueThe character used as digit group separator.
char_type is a member alias of the template parameter charT (i.e., the facet's character type).
|numpunct::grouping||Return grouping of digits (public member function)|
|numpunct::decimal_point||Return decimal point character (public member function)|
|moneypunct::thousands_sep||Return thousands separator character (public member function)|