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Variants

    std::moneypunct<CharT,International>::curr_symbol, do_curr_symbol

    From cppreference.com
     
    C++
     
    Text processing library
     
    Localization library
     
    std::moneypunct
     
    Defined in header <locale> 
    public:
string_type curr_symbol() const;
    		(1) 
    protected:
virtual string_type do_curr_symbol() const;
    		(2)
    1) Public member function, calls the member function do_curr_symbol of the most derived class.
    2) Returns the string used as the currency identifier by this locale. If International (the second template parameter of std::moneypunct) is false, the identifier is usually a single (wide) character, such as "￥" or "$". If International is true, the identifier is usually a four-character string holding the three-character ISO 4217 currency code followed by a space ("JPY " or "USD ").

    Return value

    The object of type string_type holding the currency symbol or code.

    Example

    Run this code
    #include <iostream>
#include <locale>

void show_ccy(const char* locname)
{
    std::locale loc(locname);
    std::cout << locname << " currency symbol is "
              << std::use_facet<std::moneypunct<char, true>>(loc).curr_symbol()
              << "or " << std::use_facet<std::moneypunct<char>>(loc).curr_symbol()
              << " for short\n";
}

int main()
{
    show_ccy("en_US.utf8");
    show_ccy("ja_JP.utf8");
    show_ccy("sv_SE.utf8");
    show_ccy("ru_RU.utf8");
    show_ccy("vi_VN.utf8");
}

    Output: 

    en_US.utf8 currency symbol is USD or $ for short
ja_JP.utf8 currency symbol is JPY or ￥ for short
sv_SE.utf8 currency symbol is SEK or kr for short
ru_RU.utf8 currency symbol is RUB or руб for short
vi_VN.utf8 currency symbol is VND or ₫ for short

    Defect reports

    The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

    DR Applied to Behavior as published Correct behavior
    LWG 666 C++98 the length of the identifier string was required to be 4 if International is true not required

    See also

    [virtual]
    		 provides the formatting pattern for currency values
    (virtual protected member function) [edit]