std:: 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

If a std::money_get specialization is not guaranteed to be provided by the standard library (see below), the behaviors of its get() and do_get() are not guaranteed as specified.

Specializations

The standard library is guaranteed to provide the following specializations (they are required to be implemented by any locale object ):

In addition, the standard library is also guaranteed to provide every specialization that satisfies the following type requirements:

• CharT is one of
  • char ,
  • wchar_t , and
  • any other implementation-defined character container type that meets the requirements for a character on which any of the iostream components can be instantiated; and
• InputIt must meet the requirements of LegacyInputIterator .

Nested types

Data members

Member functions

Protected member functions

Example

#include <iomanip>
#include <iostream>
#include <iterator>
#include <locale>
#include <sstream>
 
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';
}

"$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

Defect reports

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

See also