std::get_money - cppreference.com (original) (raw)
| | | | | ------------------------------------------------------------------------------------------ | | ------------- | | template< class MoneyT > /*unspecified*/ get_money( MoneyT& mon, bool intl = false ); | | (since C++11) |
When used in an expression in >> get_money(mon, intl), parses the character input as a monetary value, as specified by the std::money_get facet of the locale currently imbued in in, and stores the value in mon.
The extraction operation in in >> get_money(mon, intl) behaves as a FormattedInputFunction.
[edit] Parameters
| mon | - | variable where monetary value will be written. Can be either long double or std::basic_string |
|---|---|---|
| intl | - | expects to find required international currency strings if true, expects optional currency symbols otherwise |
[edit] Return value
An object of unspecified type such that
- if in is an object of type std::basic_istream<CharT, Traits>, the expression in >> get_money(mon, intl)
- has type std::basic_istream<CharT, Traits>&
- has value in
- behaves as if it called f(in, mon, intl)
where the function f is defined as:
template<class CharT, class Traits, class MoneyT> void f(std::basic_ios<CharT, Traits>& str, MoneyT& mon, bool intl) { using Iter = std::istreambuf_iterator<CharT, Traits>; using MoneyGet = std::money_get<CharT, Iter>; std::ios_base::iostate err = std::ios_base::goodbit; const MoneyGet& mg = std::use_facet(str.getloc()); mg.get(Iter(str.rdbuf()), Iter(), intl, str, err, mon); if (err != std::ios_base::goodbit) str.setstate(err); }
[edit] Example
#include #include #include #include int main() { std::istringstream in("$1,234.56 2.22 USD 3.33"); long double v1, v2; std::string v3; in.imbue(std::locale("en_US.UTF-8")); in >> std::get_money(v1) >> std::get_money(v2) >> std::get_money(v3, true); if (in) std::cout << std::quoted(in.str()) << " parsed as: " << v1 << ", " << v2 << ", " << v3 << '\n'; else std::cout << "Parse failed"; }
Output:
"$1,234.56 2.22 USD 3.33" parsed as: 123456, 222, 333
[edit] See also
| | parses and constructs a monetary value from an input character sequence (class template) [edit] | | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | | formats and outputs a monetary value (function template) [edit] |