# std::time_put

From cppreference.com
< cpp‎ | locale

Defined in header `<locale>` |  |
template< class CharT, class OutputIt = std::ostreambuf_iterator<CharT> > class time_put; |  |

Class template `std::time_put` encapsulates date and time formatting rules. The I/O manipulator std::put_time uses the `std::time_put` facet of the I/O stream's locale to generate text representation of an std::tm object.

Inheritance diagram

### Type requirements

- `OutputIt` must meet the requirements of LegacyOutputIterator.

### Specializations

Two standalone (locale-independent) full specializations and two partial specializations are provided by the standard library:

Defined in header `<locale>`
std::time_put<char> | creates narrow string representations of date and time
std::time_put<wchar_t> | creates wide string representations of date and time
std::time_put<char, OutputIt> | creates narrow string representations of date and time using custom output iterator
std::time_put<wchar_t, OutputIt> | creates wide string representations of date and time using custom output iterator

In addition, every locale object constructed in a C++ program implements its own (locale-specific) versions of these specializations.

### Member types

Member type | Definition
`char_type` | `CharT`
`iter_type` | `OutputIt`

### Member functions

(constructor) | constructs a new time_put facet (public member function)
(destructor) | destructs a time_put facet (protected member function)
put | invokes `do_put` (public member function)

### Member objects

static std::locale::id id | id of the locale (public member object)

### Protected member functions

do_put [virtual] | formats date/time and writes to output stream (virtual protected member function)

### Example

Run this code

    #include <iostream>
    #include <ctime>
    #include <iomanip>
    #include <codecvt>

    int main()
    {
        std::time_t t = std::time(NULL);
        std::wbuffer_convert<std::codecvt_utf8<wchar_t>> conv(std::cout.rdbuf());
        std::wostream out(&conv);
        out.imbue(std::locale("ja_JP.utf8"));
        // this I/O manipulator std::put_time uses std::time_put<wchar_t>
        out << std::put_time(std::localtime(&t), L"%A %c") << '\n';
    }

Output:

    水曜日 2011年11月09日 12時32分05秒

### See also

time_put_byname | represents the system-supplied std::time_put for the named locale (class template)
time_get | parses time/date values from an input character sequence into struct std::tm (class template)
put_time (C++11) | formats and outputs a date/time value according to the specified format (function template)

Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/locale/time_put&oldid=103688"