Espacios de nombres
Variantes
Acciones

std::put_time

De cppreference.com
< cpp‎ | io‎ | manip
 
 
Biblioteca de E/S
Manipuladores de E/S
E/S estilo C
Búferes
(en desuso en C++98)
Flujos
Abstracciones
E/S de archivos
E/S de cadenas
E/S de arrays
(en desuso en C++98)
(en desuso en C++98)
(en desuso en C++98)
Salida sincronizada
Tipos
Interfaz de categoría de error
(C++11)
 
Manipuladores de E/S
Formateo de punto flotante
Formateo de enteros
Formateo de booleanos
Control de ancho de campo y relleno
Otro formateo
Procesamiento de espacio en blanco
Vaciado de salida
(C++20)  

Manipulación de indicadores de estado
E/S de tiempo y dinero
(C++11)
(C++11)
(C++11)
put_time
(C++11)
Manipulación entre comillas
(C++14)
 
Definido en el archivo de encabezado <iomanip>
template< class charT >
/*no especificado*/ put_time( const std::tm* tmb, const charT* fmt);
(desde C++11)

Cuando se utiliza en una expresión out << put_time(tmb, fmt), dado un tiempo de calendario tmb, convierte la información de fecha y hora a una cadena de caracteres de acuerdo al formato fmt, como si se aplicase std::strftime, std::wcsftime, o análogos (dependiendo de CharT), de acuerdo con la faceta std::time_put del locale actualmente imbuido en el flujo de salida out. Esta función se comporta como una función de la salida con formato.

Contenido

[editar] Parámetros

tmb - puntero a la estructura del tiempo calendario tal como se obtiene de std::localtime o std::gmtime.
fmt - puntero a una cadena CharT terminada en nulo que especifica el formato de conversión.
La cadena de formato se compone de cero o más especificadores de conversión y caracteres ordinarios (excepto %). Todos los personajes ordinarios, incluyendo el carácter nulo de terminación, se copian en la cadena de salida sin modificaciones. Cada especificación de conversión comienza con carácter %, seguido opcionalmente por E o modificador O (se ignora si no soportado por el entorno local), seguido por el carácter que determina el comportamiento del especificador. Los especificadores de formato disponibles son las siguientes:
Original:
The format string consists of zero or more conversion specifiers and ordinary characters (except %). All ordinary characters, including the terminating null character, are copied to the output string without modification. Each conversion specification begins with % character, optionally followed by E or O modifier (ignored if unsupported by the locale), followed by the character that determines the behavior of the specifier. The following format specifiers are available:
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Conversion
specifier
Explanation Used fields
% writes literal %. The full conversion specification must be %%.
n(C++11) writes newline character
t(C++11) writes horizontal tab character
Year
Y writes year as a 4 digit decimal number tm_year
EY(C++11) writes year in the alternative representation, e.g.平成23年 (year Heisei 23) instead of 2011年 (year 2011) in ja_JP locale tm_year
y writes last 2 digits of year as a decimal number (range [00,99]) tm_year
Oy(C++11) writes last 2 digits of year using the alternative numeric system, e.g. 十一 instead of 11 in ja_JP locale tm_year
Ey(C++11) writes year as offset from locale's alternative calendar period %EC (locale-dependent) tm_year
C(C++11) writes first 2 digits of year as a decimal number (range [00,99]) tm_year
EC(C++11) writes name of the base year (period) in the locale's alternative representation, e.g. 平成 (Heisei era) in ja_JP tm_year
G(C++11) writes ISO 8601 week-based year, i.e. the year that contains the specified week.
En IS0 8601 semana comienza el lunes y la primera semana del año, deberán cumplir los requisitos siguientes:
Original:
In IS0 8601 weeks begin with Monday and the first week of the year must satisfy the following requirements:
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
  • Incluye 4 de enero
    Original:
    Includes January 4
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
  • Incluye primer jueves del año
    Original:
    Includes first Thursday of the year
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
tm_year, tm_wday, tm_yday
g(C++11) writes last 2 digits of ISO 8601 week-based year, i.e. the year that contains the specified week (range [00,99]).
En IS0 8601 semana comienza el lunes y la primera semana del año, deberán cumplir los requisitos siguientes:
Original:
In IS0 8601 weeks begin with Monday and the first week of the year must satisfy the following requirements:
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
  • Incluye 4 de enero
    Original:
    Includes January 4
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
  • Incluye primer jueves del año
    Original:
    Includes first Thursday of the year
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
tm_year, tm_wday, tm_yday
Month
b writes abbreviated month name, e.g. Oct (locale dependent) tm_mon
h(C++11) synonym of b tm_mon
B writes full month name, e.g. October (locale dependent) tm_mon
m writes month as a decimal number (range [01,12]) tm_mon
Om(C++11) writes month using the alternative numeric system, e.g. 十二 instead of 12 in ja_JP locale tm_mon
Week
U writes week of the year as a decimal number (Sunday is the first day of the week) (range [00,53]) tm_year, tm_wday, tm_yday
OU(C++11) writes week of the year, as by %U, using the alternative numeric system, e.g. 五十二 instead of 52 in ja_JP locale tm_year, tm_wday, tm_yday
W writes week of the year as a decimal number (Monday is the first day of the week) (range [00,53]) tm_year, tm_wday, tm_yday
OW(C++11) writes week of the year, as by %W, using the alternative numeric system, e.g. 五十二 instead of 52 in ja_JP locale tm_year, tm_wday, tm_yday
V(C++11) writes ISO 8601 week of the year (range [01,53]).
En IS0 8601 semana comienza el lunes y la primera semana del año, deberán cumplir los requisitos siguientes:
Original:
In IS0 8601 weeks begin with Monday and the first week of the year must satisfy the following requirements:
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
  • Incluye 4 de enero
    Original:
    Includes January 4
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
  • Incluye primer jueves del año
    Original:
    Includes first Thursday of the year
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
tm_year, tm_wday, tm_yday
OV(C++11) writes week of the year, as by %V, using the alternative numeric system, e.g. 五十二 instead of 52 in ja_JP locale tm_year, tm_wday, tm_yday
Day of the year/month
j writes day of the year as a decimal number (range [001,366]) tm_yday
d writes day of the month as a decimal number (range [01,31]) tm_mday
Od(C++11) writes zero-based day of the month using the alternative numeric system, e.g 二十七 instead of 23 in ja_JP locale
Carácter individual está precedido por un espacio .
Original:
Single character is preceded by a space.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
tm_mday
e(C++11) writes day of the month as a decimal number (range [1,31]).
Único dígito y precedido por un espacio .
Original:
Single digit is preceded by a space.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
tm_mday
Oe(C++11) writes one-based day of the month using the alternative numeric system, e.g. 二十七 instead of 27 in ja_JP locale
Carácter individual está precedido por un espacio .
Original:
Single character is preceded by a space.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
tm_mday
Day of the week
a writes abbreviated weekday name, e.g. Fri (locale dependent) tm_wday
A writes full weekday name, e.g. Friday (locale dependent) tm_wday
w writes weekday as a decimal number, where Sunday is 0 (range [0-6]) tm_wday
Ow(C++11) writes weekday, where Sunday is 0, using the alternative numeric system, e.g. 二 instead of 2 in ja_JP locale tm_wday
u(C++11) writes weekday as a decimal number, where Monday is 1 (ISO 8601 format) (range [1-7]) tm_wday
Ou(C++11) writes weekday, where Monday is 1, using the alternative numeric system, e.g. 二 instead of 2 in ja_JP locale tm_wday
Hour, minute, second
H writes hour as a decimal number, 24 hour clock (range [00-23]) tm_hour
OH(C++11) writes hour from 24-hour clock using the alternative numeric system, e.g. 十八 instead of 18 in ja_JP locale tm_hour
I writes hour as a decimal number, 12 hour clock (range [01,12]) tm_hour
OI(C++11) writes hour from 12-hour clock using the alternative numeric system, e.g. 六 instead of 06 in ja_JP locale tm_hour
M writes minute as a decimal number (range [00,59]) tm_min
OM(C++11) writes minute using the alternative numeric system, e.g. 二十五 instead of 25 in ja_JP locale tm_min
S writes second as a decimal number (range [00,60]) tm_sec
OS(C++11) writes second using the alternative numeric system, e.g. 二十四 instead of 24 in ja_JP locale tm_sec
Other
c writes standard date and time string, e.g. Sun Oct 17 04:41:13 2010 (locale dependent) all
Ec(C++11) writes alternative date and time string, e.g. using 平成23年 (year Heisei 23) instead of 2011年 (year 2011) in ja_JP locale all
x writes localized date representation (locale dependent) all
Ex(C++11) writes alternative date representation, e.g. using 平成23年 (year Heisei 23) instead of 2011年 (year 2011) in ja_JP locale all
X writes localized time representation (locale dependent) all
EX(C++11) writes alternative time representation (locale dependent) all
D(C++11) equivalent to "%m/%d/%y" tm_mon, tm_mday, tm_year
F(C++11) equivalent to "%Y-%m-%d" (the ISO 8601 date format) tm_mon, tm_mday, tm_year
r(C++11) writes localized 12-hour clock time (locale dependent) tm_hour, tm_min, tm_sec
R(C++11) equivalent to "%H:%M" tm_hour, tm_min
T(C++11) equivalent to "%H:%M:%S" (the ISO 8601 time format) tm_hour, tm_min, tm_sec
p writes localized a.m. or p.m. (locale dependent) tm_hour
z(C++11) writes offset from UTC in the ISO 8601 format (e.g. -0430), or no characters if the time zone information is not available tm_isdst
Z writes time zone name or abbreviation, or no characters if the time zone information is not available (locale dependent) tm_isdst

[editar] Valor de retorno

Devuelve un objeto de tipo no especificado de tal manera que si out es el nombre de un flujo de salida de tipo std::basic_ostream<CharT, Traits>, entonces la expresión out << put_time(tmb, fmt) se comporta como si el siguiente código se ejecutara:

typedef std::ostreambuf_iterator<CharT, Traits> Iter;
typedef std::time_put<CharT, Iter> TimePut;
const TimePut& tp = std::use_facet<TimePut>(out.getloc());
const Iter end = tp.put(Iter(out.rdbuf()), out, out.fill(), tmb, fmt, fmt + Traits::length(fmt));
if (end.failed())
    out.setstate(std::ios_base::badbit);


[editar] Ejemplo

#include <iostream>
#include <iomanip>
#include <ctime>
int main()
{
    std::time_t t = std::time(NULL);
    std::tm tm = *std::localtime(&t);
    std::cout.imbue(std::locale("ru_RU.utf8"));
    std::cout << "ru_RU: " << std::put_time(&tm, "%c %Z") << '\n';
    std::cout.imbue(std::locale("ja_JP.utf8"));
    std::cout << "ja_JP: " << std::put_time(&tm, "%c %Z") << '\n';
}

Salida:

ru_RU: Ср. 28 дек. 2011 10:21:16 EST
ja_JP: 2011年12月28日 10時21分16秒 EST

[editar] Ver también

Formatea el contenido de struct std::tm para salida como una secuencia de caracteres.
(plantilla de clase) [editar]
Convierte un objeto tm a una representación textual personalizada.
(función) [editar]
Convierte un objeto tm a una representación de cadena de texto de caracteres anchos personalizada.
(función) [editar]