std::get_time

来自cppreference.com
< cpp‎ | io‎ | manip

该页由英文版wiki使用Google Translate机器翻译而来。

该翻译可能存在错误或用词不当。鼠标停留在文本上可以看到原版本。你可以帮助我们修正错误或改进翻译。参见说明请点击这里.

点击这里参见该页的英文版本

 
C++
 
输入/输出库
I / O操纵
C-风格的I / O
缓冲区
原文：
Buffers
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf（已弃用）
流
原文：
Streams
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
抽象
原文：
Abstractions
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
文件I / O
原文：
File I/O
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
basic_ifstream
basic_ofstream
basic_fstream
字符串I / O
原文：
String I/O
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
basic_istringstream
basic_ostringstream
basic_stringstream
阵列的I / O
原文：
Array I/O
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
istrstream（已弃用）
ostrstream（已弃用）
strstream（已弃用）
类型
原文：
Types
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
streamoff
streamsize
fpos
Error类的接口
原文：
Error category interface
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
iostream_category（C++11）
io_errc（C++11）
 
输入/输出操纵
浮点格式
原文：
Floating-point formatting
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
fixed
scientific
hexfloat
defaultfloat

（C++11）
（C++11）
整型格式
原文：
Integer formatting
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
布尔格式
原文：
Boolean formatting
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
boolalpha
noboolalpha
场的宽度和填充控制
原文：
Field width and fill control
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
其他格式
原文：
Other formatting
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
空白处理
原文：
Whitespace processing
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
输出冲洗
原文：
Output flushing
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
状态标志位操作
原文：
Status flags manipulation
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
时间和金钱I / O
原文：
Time and money I/O
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
get_money（C++11）
get_time（C++11）
put_money（C++11）
put_time（C++11）
 
在头文件 <iomanip> 中定义
template< class CharT >
/*unspecified*/ get_time( std::tm* tmb, const CharT* fmt);
 （C++11 起）
使用时，表达in >> get_time(tmb, fmt)，解析作为一个日期/时间值的格式字符串的字符输入fmt根据目前的语言环境充满在输出流中std::time_getout方面。所得到的值被存储在一个std::tm对象所指向tmb.
原文：
When used in an expression in >> get_time(tmb, fmt), parses the character input as a date/time value according to format string fmt according to the std::time_get facet of the locale currently imbued in the output stream out. The resultant value is stored in a std::tm object pointed to by tmb.
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。

目录

[编辑] 参数

tmb -
有效的指针的std :: TM的结果将被存储的对象
原文：
valid pointer to the std::tm object where the result will be stored
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
fmt -
指向一个空结束的图表指定转换格式的字符串的指针
格式字符串由零个或多个转换符，空格字符，和普通的字符（除%）。每一个普通的字符匹配一个字符的输入流中区分大小写的比较。每个空白字符匹配输入字符串中的任意空白。每个转换规格%字符开始，后面可以跟E或O的修饰符（被忽略，如果不支持的语言环境），其次的性格，决定了行为的说明。的格式说明符相匹配的POSIX功能strptime()
原文：
The format string consists of zero or more conversion specifiers, whitespace characters, and ordinary characters (except %). Each ordinary character is expected to match one character in the input stream in case-insensitive comparison. Each whitespace character matches arbitrary whitespace in the input string. 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 format specifiers match the POSIX function strptime():
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
Conversion
specifier 		Explanation Writes to fields
% matches a literal %. The full conversion specification must be %%. (none)
t matches any whitespace. (none)
n matches any whitespace. (none)
Year
Y parses full year as a 4 digit decimal number, leading zeroes permitted but not required tm_year
EY parses year in the alternative representation, e.g.平成23年 (year Heisei 23) which writes 2011 to tm_year in ja_JP locale tm_year
y parses last 2 digits of year as a decimal number. Range [69,99] results in values 1969 to 1999, range [00,68] results in 2000-2068 tm_year
Oy parses last 2 digits of year using the alternative numeric system, e.g. 十一 is parsed as 11 in ja_JP locale tm_year
Ey parses year as offset from locale's alternative calendar period %EC tm_year
C parses the first 2 digits of year as a decimal number (range [00,99]) tm_year
EC parses the name of the base year (period) in the locale's alternative representation, e.g. 平成 (Heisei era) in ja_JP tm_year
Month
b parses the month name, either full or abbreviated, e.g. Oct tm_mon
h synonym of b tm_mon
B synonym of b tm_mon
m parses the month as a decimal number (range [01,12]), leading zeroes permitted but not required tm_mon
Om parses the month using the alternative numeric system, e.g. 十二 parses as 12 in ja_JP locale tm_mon
Week
U parses the week of the year as a decimal number (Sunday is the first day of the week) (range [00,53]), leading zeroes permitted but not required tm_year, tm_wday, tm_yday
OU parses the week of the year, as by %U, using the alternative numeric system, e.g. 五十二 parses as 52 in ja_JP locale tm_year, tm_wday, tm_yday
W parses the week of the year as a decimal number (Monday is the first day of the week) (range [00,53]), leading zeroes permitted but not required tm_year, tm_wday, tm_yday
OW parses the week of the year, as by %W, using the alternative numeric system, e.g. 五十二 parses as 52 in ja_JP locale tm_year, tm_wday, tm_yday
Day of the year/month
j parses day of the year as a decimal number (range [001,366]), leading zeroes permitted but not required tm_yday
d parses the day of the month as a decimal number (range [01,31]), leading zeroes permitted but not required tm_mday
Od parses the day of the month using the alternative numeric system, e.g 二十七 parses as 23 in ja_JP locale, leading zeroes permitted but not required tm_mday
e synonym of d tm_mday
Oe synonym of Od tm_mday
Day of the week
a parses the name of the day of the week, either full or abbreviated, e.g. Fri tm_wday
A synonym of a tm_wday
w parses weekday as a decimal number, where Sunday is 0 (range [0-6]) tm_wday
Ow parses weekday as a decimal number, where Sunday is 0, using the alternative numeric system, e.g. 二 parses as 2 in ja_JP locale tm_wday
Hour, minute, second
H parses the hour as a decimal number, 24 hour clock (range [00-23]), leading zeroes permitted but not required tm_hour
OH parses hour from 24-hour clock using the alternative numeric system, e.g. 十八 parses as 18 in ja_JP locale tm_hour
I parses hour as a decimal number, 12 hour clock (range [01,12]), leading zeroes permitted but not required tm_hour
OI parses hour from 12-hour clock using the alternative numeric system, e.g. 六 reads as 06 in ja_JP locale tm_hour
M parses minute as a decimal number (range [00,59]), leading zeroes permitted but not required tm_min
OM parses minute using the alternative numeric system, e.g. 二十五 parses as 25 in ja_JP locale tm_min
S parses second as a decimal number (range [00,60]), leading zeroes permitted but not required tm_sec
OS parses second using the alternative numeric system, e.g. 二十四 parses as 24 in ja_JP locale tm_sec
Other
c parses the locale's standard date and time string format, e.g. Sun Oct 17 04:41:13 2010 (locale dependent) all
Ec parses the locale's alternative date and time string format, e.g. expecting 平成23年 (year Heisei 23) instead of 2011年 (year 2011) in ja_JP locale all
x parses the locale's standard date representation all
Ex parses the locale's alternative date representation, e.g. expecting 平成23年 (year Heisei 23) instead of 2011年 (year 2011) in ja_JP locale all
X parses the locale's standard time representation all
EX parses the locale's alternative time representation all
D equivalent to "%m / %d / %y " tm_mon, tm_mday, tm_year
r parses locale's standard 12-hour clock time (in POSIX, "%I : %M : %S %p") tm_hour, tm_min, tm_sec
R equivalent to "%H : %M" tm_hour, tm_min
T equivalent to "%H : %M : %S" tm_hour, tm_min, tm_sec
p parses the locale's equivalent of a.m. or p.m. tm_hour
原文：
pointer to a null-terminated CharT string specifying the conversion format
格式字符串由零个或多个转换符，空格字符，和普通的字符（除%）。每一个普通的字符匹配一个字符的输入流中区分大小写的比较。每个空白字符匹配输入字符串中的任意空白。每个转换规格%字符开始，后面可以跟E或O的修饰符（被忽略，如果不支持的语言环境），其次的性格，决定了行为的说明。的格式说明符相匹配的POSIX功能strptime()
原文：
The format string consists of zero or more conversion specifiers, whitespace characters, and ordinary characters (except %). Each ordinary character is expected to match one character in the input stream in case-insensitive comparison. Each whitespace character matches arbitrary whitespace in the input string. 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 format specifiers match the POSIX function strptime():
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。
Conversion
specifier 		Explanation Writes to fields
% matches a literal %. The full conversion specification must be %%. (none)
t matches any whitespace. (none)
n matches any whitespace. (none)
Year
Y parses full year as a 4 digit decimal number, leading zeroes permitted but not required tm_year
EY parses year in the alternative representation, e.g.平成23年 (year Heisei 23) which writes 2011 to tm_year in ja_JP locale tm_year
y parses last 2 digits of year as a decimal number. Range [69,99] results in values 1969 to 1999, range [00,68] results in 2000-2068 tm_year
Oy parses last 2 digits of year using the alternative numeric system, e.g. 十一 is parsed as 11 in ja_JP locale tm_year
Ey parses year as offset from locale's alternative calendar period %EC tm_year
C parses the first 2 digits of year as a decimal number (range [00,99]) tm_year
EC parses the name of the base year (period) in the locale's alternative representation, e.g. 平成 (Heisei era) in ja_JP tm_year
Month
b parses the month name, either full or abbreviated, e.g. Oct tm_mon
h synonym of b tm_mon
B synonym of b tm_mon
m parses the month as a decimal number (range [01,12]), leading zeroes permitted but not required tm_mon
Om parses the month using the alternative numeric system, e.g. 十二 parses as 12 in ja_JP locale tm_mon
Week
U parses the week of the year as a decimal number (Sunday is the first day of the week) (range [00,53]), leading zeroes permitted but not required tm_year, tm_wday, tm_yday
OU parses the week of the year, as by %U, using the alternative numeric system, e.g. 五十二 parses as 52 in ja_JP locale tm_year, tm_wday, tm_yday
W parses the week of the year as a decimal number (Monday is the first day of the week) (range [00,53]), leading zeroes permitted but not required tm_year, tm_wday, tm_yday
OW parses the week of the year, as by %W, using the alternative numeric system, e.g. 五十二 parses as 52 in ja_JP locale tm_year, tm_wday, tm_yday
Day of the year/month
j parses day of the year as a decimal number (range [001,366]), leading zeroes permitted but not required tm_yday
d parses the day of the month as a decimal number (range [01,31]), leading zeroes permitted but not required tm_mday
Od parses the day of the month using the alternative numeric system, e.g 二十七 parses as 23 in ja_JP locale, leading zeroes permitted but not required tm_mday
e synonym of d tm_mday
Oe synonym of Od tm_mday
Day of the week
a parses the name of the day of the week, either full or abbreviated, e.g. Fri tm_wday
A synonym of a tm_wday
w parses weekday as a decimal number, where Sunday is 0 (range [0-6]) tm_wday
Ow parses weekday as a decimal number, where Sunday is 0, using the alternative numeric system, e.g. 二 parses as 2 in ja_JP locale tm_wday
Hour, minute, second
H parses the hour as a decimal number, 24 hour clock (range [00-23]), leading zeroes permitted but not required tm_hour
OH parses hour from 24-hour clock using the alternative numeric system, e.g. 十八 parses as 18 in ja_JP locale tm_hour
I parses hour as a decimal number, 12 hour clock (range [01,12]), leading zeroes permitted but not required tm_hour
OI parses hour from 12-hour clock using the alternative numeric system, e.g. 六 reads as 06 in ja_JP locale tm_hour
M parses minute as a decimal number (range [00,59]), leading zeroes permitted but not required tm_min
OM parses minute using the alternative numeric system, e.g. 二十五 parses as 25 in ja_JP locale tm_min
S parses second as a decimal number (range [00,60]), leading zeroes permitted but not required tm_sec
OS parses second using the alternative numeric system, e.g. 二十四 parses as 24 in ja_JP locale tm_sec
Other
c parses the locale's standard date and time string format, e.g. Sun Oct 17 04:41:13 2010 (locale dependent) all
Ec parses the locale's alternative date and time string format, e.g. expecting 平成23年 (year Heisei 23) instead of 2011年 (year 2011) in ja_JP locale all
x parses the locale's standard date representation all
Ex parses the locale's alternative date representation, e.g. expecting 平成23年 (year Heisei 23) instead of 2011年 (year 2011) in ja_JP locale all
X parses the locale's standard time representation all
EX parses the locale's alternative time representation all
D equivalent to "%m / %d / %y " tm_mon, tm_mday, tm_year
r parses locale's standard 12-hour clock time (in POSIX, "%I : %M : %S %p") tm_hour, tm_min, tm_sec
R equivalent to "%H : %M" tm_hour, tm_min
T equivalent to "%H : %M : %S" tm_hour, tm_min, tm_sec
p parses the locale's equivalent of a.m. or p.m. tm_hour
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。

[编辑] 返回值

返回in是，如果一个输入流的类型std::basic_istream<CharT, Traits>的名称，然后表达in >> get_time(tmb, fmt)的行为，如果下面的代码被执行对象的类型不明确
原文：
Returns an object of unspecified type such that if in is the name of an input stream of type std::basic_istream<CharT, Traits>, then the expression in >> get_time(tmb, fmt) behaves as if the following code was executed:
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。

typedef std::istreambuf_iterator<CharT, Traits> Iter;
typedef std::time_get<CharT, Iter> TimeGet;
std::ios_base::iostate err = std::ios_base::goodbit;
const TimeGet& tg = std::use_facet<TimeGet>(in.getloc());
tg.get(Iter(in.rdbuf()), Iter(), in, err, tmb, fmt, fmt + traits::length(fmt));
if (err != std::ios_base::goodbit)
    in.setstate(err):


[编辑] 示例

#include <iostream>
#include <sstream>
#include <locale>
#include <iomanip>
#include <ctime>
 
int main()
{
    std::tm t;
    std::istringstream ss("2011-Februar-18 23:12:34");
    ss.imbue(std::locale("de_DE"));
    ss >> std::get_time(&t, "%Y-%b-%d %H:%M:%S");
    std::cout << std::put_time(&t, "%c") << '\n';
}

输出： 

Sun Feb 18 23:12:34 2011

[编辑] 另请参阅
解析输入字符序列分解成struct std::tm的时间/日期值
原文：
parses time/date values from an input character sequence into struct std::tm
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。

（类模板） [edit]
（C++11）
格式和输出的日期/时间值，按指定的格式
原文：
formats and outputs a date/time value according to the specified format
这段文字是通过 Google Translate 自动翻译生成的。
您可以帮助我们检查、纠正翻译中的错误。详情请点击这里。

（函数模板） [edit]
来自“http://zh.cppreference.com/mwiki/index.php?title=cpp/io/manip/get_time&oldid=38122”