std:: put_money

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

Return value

An object of unspecified type such that

• if out is an object of type std:: basic_ostream < CharT, Traits > , the expression out << put_money ( mon, intl )
  • has type std:: basic_ostream < CharT, Traits > &
  • has value out
  • behaves as a FormattedOutputFunction that calls f ( out, mon, intl )

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 <iomanip>
#include <iostream>
 
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';
}

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