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std::time

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< cpp‎ | chrono‎ | c

 
 
Biblioteca de utilitários
Digite apoio (basic types, RTTI, type traits)
Gerenciamento de memória dinâmica
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Utilidades do programa
Variadic funções
Data e hora
Objetos de função
initializer_list(C++11)
bitset
hash(C++11)
Os operadores relacionais
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Relational operators
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rel_ops::operator!=
rel_ops::operator>
rel_ops::operator<=
rel_ops::operator>=
Pares e tuplas
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Pairs and tuples
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pair
tuple(C++11)
piecewise_construct_t(C++11)
piecewise_construct(C++11)
Troque, avançar e avançar
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Swap, forward and move
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swap
forward(C++11)
move(C++11)
move_if_noexcept(C++11)
declval(C++11)
 
 
C estilo de utilitários de data e hora
Funções
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Functions
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Manipulação do tempo
Original:
Time manipulation
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difftime
time
clock
Conversões de formato
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Format conversions
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asctime
ctime
strftime
wcsftime
gmtime
localtime
mktime
Constantes
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Constants
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CLOCKS_PER_SEC
Tipos
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Types
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tm
time_t
clock_t
 
Defined in header <ctime>
time_t time( std::time_t *time );
Retorna a hora atual calendário codificado como um objeto std::time_t.
Original:
Returns the current calendar time encoded as a std::time_t object.
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Índice

[editar] Parâmetros

time -
apontador para um objecto std::time_t para armazenar a hora ou NULL
Original:
pointer to a std::time_t object to store the time in or NULL
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[editar] Valor de retorno

Tempo calendário atual codificado como objeto std::time_t em (std::time_t)(-1) sucesso, em caso de erro. Se o argumento não é NULL, o valor de retorno também está definido para o objeto apontado por time.
Original:
Current calendar time encoded as std::time_t object on success, (std::time_t)(-1) on error. If the argument is not NULL, the return value is also set to the object pointed by time.
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[editar] Notas

A codificação de tempo do calendário em std::time_t não é especificado, mas a maioria dos sistemas em conformidade com POSIX specification e retornar um valor de tipo integral mantendo o número de segundos desde a época. Implementações em que std::time_t é um 32-bit inteiros (muitas implementações históricos) falhar no ano de 2038.
Original:
The encoding of calendar time in std::time_t is unspecified, but most systems conform to POSIX specification and return a value of integral type holding the number of seconds since the Epoch. Implementations in which std::time_t is a 32-bit signed integer (many historical implementations) fail in the year 2038.
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[editar] Exemplo

#include <ctime>
#include <iostream>
 
int main()
{
    std::time_t result = std::time(NULL);
    std::cout << std::asctime(std::localtime(&result))
              << result << " seconds since the Epoch\n";
}

Output:

Wed Sep 21 10:27:52 2011
1316615272 seconds since the Epoch

[editar] Veja também

converte tempo desde a época de tempo do calendário expressa como hora local
Original:
converts time since epoch to calendar time expressed as local time
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(função) [edit]
converte tempo desde a época de tempo do calendário expressa como Tempo Universal Coordenado
Original:
converts time since epoch to calendar time expressed as Universal Coordinated Time
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(função) [edit]
tempo de relógio do relógio do sistema à escala em tempo real
Original:
wall clock time from the system-wide realtime clock
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(classe) [edit]