std::money_get

 

C++

Language

Standard library headers

Concepts

Utilities library

Strings library

Containers library

Algorithms library

Iterators library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Filesystem library (C++17)

Technical Specifications

 

Localizations library

Locales and facets
locale
use_facet	has_facet
Character classification
isspace isblank (C++11) iscntrl isupper islower isalpha	isdigit ispunct isxdigit isalnum isprint isgraph
Conversions
toupper tolower	wstring_convert (C++11) wbuffer_convert (C++11)
Facet category base classes
ctype_base codecvt_base messages_base	time_base money_base
Facet categories
ctype ctype<char> codecvt collate messages time_get time_put	num_get num_put numpunct money_get money_put moneypunct
Locale-specific facets
ctype_byname codecvt_byname messages_byname collate_byname	time_get_byname time_put_byname numpunct_byname moneypunct_byname
Code conversion facets
codecvt_utf8 (C++11) codecvt_utf16 (C++11)	codecvt_utf8_utf16 (C++11) codecvt_mode (C++11)
C locale
setlocale localeconv lconv	LC_ALLLC_COLLATELC_CTYPELC_MONETARYLC_NUMERICLC_TIME

 

std::money_get

Member functions

money_get::money_get

money_get::~money_get

money_get::getmoney_get::do_get

 

Defined in header <locale>
template<     class CharT,     class InputIt = std::istreambuf_iterator<CharT> > class money_get;

Class template std::money_get encapsulates the rules for parsing monetary values from character streams. The standard I/O manipulator std::get_money uses the std::money_get facet of the I/O stream's locale.

Inheritance diagram

Type requirements

- InputIt must meet the requirements of InputIterator.

Specializations

Two standalone (locale-independent) full specializations and two partial specializations are provided by the standard library:

Defined in header <locale>
std::money_get<char>	parses narrow string representations of monetary values
std::money_get<wchar_t>	parses wide string representations of monetary values
std::money_get<char, InputIt>	parses narrow string representations of monetary values using custom input iterator
std::money_get<wchar_t, InputIt>	parses wide string representations of monetary values using custom input iterator

In addition, every locale object constructed in a C++ program implements its own (locale-specific) versions of these specializations.

Member types

Member type	Definition
char_type	CharT
string_type	std::basic_string<CharT>
iter_type	InputIt

Member functions

(constructor)	constructs a new money_get facet (public member function)
(destructor)	destructs a money_get facet (protected member function)
get	invokes do_get (public member function)

Protected member functions

do_get [virtual]	parses a monetary value from an input stream (virtual protected member function)

Member objects

static std::locale::id id	id of the locale (public member object)

Example

Run this code

#include <iostream>
#include <sstream>
#include <locale>
#include <iomanip>
#include <iterator>
int main()
{
    std::string str = "$1.11 $2.22 $3.33";
    std::cout << std::fixed << std::setprecision(2);
 
    std::cout << '"' << str << "\" parsed with the I/O manipulator: ";
    std::istringstream s1(str);
    s1.imbue(std::locale("en_US.UTF-8"));
    long double val;
    while(s1 >> std::get_money(val))
        std::cout << val/100 << ' ';
    std::cout << '\n';
 
    str = "USD  1,234.56";
    std::cout << '"' << str << "\" parsed with the facet directly: ";
    std::istringstream s2(str);
    s2.imbue(std::locale("en_US.UTF-8"));
    auto& f = std::use_facet<std::money_get<char>>(s2.getloc());
    std::ios_base::iostate err;
    std::istreambuf_iterator<char> beg(s2), end;
    f.get(beg, end, true, s2, err, val);
    std::cout << val/100 << '\n';
}

Output:

"$1.11 $2.22 $3.33" parsed with the I/O manipulator: 1.11 2.22 3.33
"USD  1,234.56" parsed with the facet directly: 1234.56

See also

moneypunct	defines monetary formatting parameters used by std::money_get and std::money_put (class template)
money_put	formats a monetary value for output as a character sequence (class template)
get_money (C++11)	parses a monetary value (function template)