numpunct::do_grouping
A protected virtual member function that is called to return a locale-specific rule for determining how digits are grouped to the left of any decimal point.
virtual string do_grouping( ) const;
Return Value
A locale-specific rule for determining how digits are grouped to the left of any decimal point.
Remarks
The protected virtual member function returns a locale-specific rule for determining how digits are grouped to the left of any decimal point. The encoding is the same as for lconv::grouping.
Example
See the example for grouping, where the virtual member function is called by grouping.
Requirements
Header: <locale>
Namespace: std