Espaços nominais
Variantes
Acções

std::difftime

Da cppreference.com
< cpp‎ | chrono‎ | c

This page has been machine-translated from the English version of the wiki using Google Translate.

The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here.

Click here for the English version of this page

 
C++
 
Biblioteca de utilitários
Digite apoio (basic types, RTTI, type traits)
Gerenciamento de memória dinâmica
De tratamento de erros
Utilidades do programa
Variadic funções
Data e hora
Objetos de função
(C++11)
(C++11)
Os operadores relacionais
Original:
Relational operators
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
rel_ops::operator!=
rel_ops::operator>
rel_ops::operator<=
rel_ops::operator>=
Pares e tuplas
Original:
Pairs and tuples
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
(C++11)
(C++11)
(C++11)
Troque, avançar e avançar
Original:
Swap, forward and move
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
(C++11)
(C++11)
(C++11)
(C++11)
 
Utilitários de data e hora
 
C estilo de utilitários de data e hora
Funções
Original:
Functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Manipulação do tempo
Original:
Time manipulation
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
difftime
Conversões de formato
Original:
Format conversions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Constantes
Original:
Constants
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Tipos
Original:
Types
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
 
Definido no cabeçalho <ctime>
double difftime( time_t time2, time_t time1 );
Calcula diferença entre duas horas de calendário como objetos time_t (time2 - time1) em segundos.
Original:
Computes difference between two calendar times as time_t objects (time2 - time1) in seconds.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Índice

[editar] Parâmetros

time1, time2 -
vezes para comparar
Original:
times to compare
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[editar] Valor de retorno

Diferença entre duas vezes no segundo
Original:
Difference between two times in seconds
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[editar] Exemplo

#include <iostream>
#include <ctime>
int main()
{
    std::time_t start = std::time(NULL);
    volatile double d;
    for(int n=0; n<10000; ++n)
       for(int m=0; m<100000; ++m)
           d += d*n*m; // some time-consuming operation
    std::cout << "Wall time passed: "
              << std::difftime(std::time(NULL), start) << " s.\n";
}

Saída: 

Wall time passed: 7 s.

[editar] Veja também

(C++11)
um intervalo de tempo
Original:
a time interval
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(modelo de classe) [edit]
Documentação C para difftime
Obtida de "https://pt.cppreference.com/mwiki/index.php?title=cpp/chrono/c/difftime&oldid=20030"