std::numpunct

From Cppreference

Defined in header `<locale>`

template< class charT > class numpunct;

The facet std::numpunct encapsulates numeric punctuation preferences. Stream I/O operations use std::numpunct through std::num_get and std::num_put for parsing numeric input and formatting numeric output.

Two specializations are provided by the standard library

Defined in header `<locale>`

std::numpunct<char>	provides equivalents of the "C" locale preferences

std::numpunct<wchar_t>	provides wide character equivalents of the "C" locale preferences

#include <iostream>
#include <locale>
 
struct french_bool : std::numpunct<char> {
    string_type do_truename() const { return "oui"; }
    string_type do_falsename() const { return "non"; }
};
 
int main()
{
    std::cout << "default locale: "
              << std::boolalpha << true << ", " << false << '\n';
    std::cout.imbue(std::locale(std::cout.getloc(), new french_bool()));
    std::cout << "locale with modified numpunct: "
              << std::boolalpha << true << ", " << false << '\n';
}

Output:

default locale: true, false
locale with modified numpunct: oui, non

[edit] See also

numpunct_byname

creates a numpunct facet for the named locale
(class template)


Member type	Definition

`char_type`	`charT`

`string_type`	std::basic_string<charT>


Member name	Type

`id` (static)	std::locale::id

std::numpunct

From Cppreference

Contents

[edit] Member types

[edit] Member objects

[edit] Member functions

the following protected member functions can be overridden in a user-defined facet derived from numpunct

[edit] Example

[edit] See also