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std::put_money

Defined in header <iomanip> 
template< class MoneyT >
/*unspecified*/ put_money( const MoneyT& mon, bool intl = false );
 (since C++11)

When used in an expression out << put_money(mon, intl), converts the monetary value mon to its character representation as specified by the std::money_put facet of the locale currently imbued in out.

The insertion operation in out << put_money(mon, intl) behaves as a FormattedOutputFunction.

Parameters

mon - a monetary value, either long double or std::basic_string
intl - use international currency strings if true, use currency symbols otherwise

Return value

An object of unspecified type such that.

where the function f is defined as:

template<class CharT, class Traits, class MoneyT>
void f(std::basic_ios<CharT, Traits>& str, const MoneyT& mon, bool intl)
{
    using Iter = std::ostreambuf_iterator<CharT, Traits>;
    using MoneyPut = std::money_put<CharT, Iter>;
 
    const MoneyPut& mp = std::use_facet<MoneyPut>(str.getloc());
    const Iter end = mp.put(Iter(str.rdbuf()), intl, str, str.fill(), mon);
 
    if (end.failed())
        str.setstate(std::ios_base::badbit);
}

Example

#include <iostream>
#include <iomanip>
 
int main()
{
    long double mon = 123.45; // or std::string mon = "123.45";
 
    std::cout.imbue(std::locale("en_US.UTF-8"));
    std::cout << std::showbase
              << "en_US: " << std::put_money(mon)
              << " or " << std::put_money(mon, true) << '\n';
 
    std::cout.imbue(std::locale("ru_RU.UTF-8"));
    std::cout << "ru_RU: " << std::put_money(mon)
              << " or " << std::put_money(mon, true) << '\n';
 
    std::cout.imbue(std::locale("ja_JP.UTF-8"));
    std::cout << "ja_JP: " << std::put_money(mon)
              << " or " << std::put_money(mon, true) << '\n';
}

Possible output:

en_US: $1.23 or USD  1.23
ru_RU: 1.23 руб or 1.23 RUB 
ja_JP: ￥123 or JPY  123

See also

formats a monetary value for output as a character sequence
(class template)
(C++11)
 parses a monetary value
(function template)

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