C Date and time utilities

 

C++

Language

Concepts

Utilities library

Strings library

Containers library

Algorithms library

Iterators library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

 

Utilities library

Type support (basic types, RTTI, type traits)

Dynamic memory management

Error handling

Program utilities

Variadic functions

Date and time

Function objects

initializer_list (C++11)

bitset

hash (C++11)

Relational operators

rel_ops::operator!= rel_ops::operator> rel_ops::operator<= rel_ops::operator>=

Pairs and tuples

pair

tuple (C++11)

piecewise_construct_t (C++11)

piecewise_construct (C++11)

Swap, forward and move

swap

forward (C++11)

move (C++11)

move_if_noexcept (C++11)

declval (C++11)

 

Date and time utilities

time_point (C++11)

duration (C++11)

system_clock (C++11)

steady_clock (C++11)

high_resolution_clock (C++11)

C library facilities

 

C-style date and time utilities

Functions

Time manipulation

difftime

time

clock

Format conversions

asctime

ctime

strftime

wcsftime

gmtime

localtime

mktime

Constants

CLOCKS_PER_SEC

Types

tm

time_t

clock_t

 

Functions

Defined in header <ctime>
Time manipulation
difftime	computes the difference between times (function)
time	returns the current time of the system as time since epoch (function)
clock	returns raw processor clock time since the program is started (function)
Format conversions
asctime	converts a tm object to a textual representation (function)
ctime	converts a time_t object to a textual representation (function)
strftime	converts a tm object to custom textual representation (function)
wcsftime	converts a tm object to custom wide string textual representation (function)
gmtime	converts time since epoch to calendar time expressed as Universal Coordinated Time (function)
localtime	converts time since epoch to calendar time expressed as local time (function)
mktime	converts calendar time to time since epoch (function)

Constants

CLOCKS_PER_SEC	number of processor clock ticks per second (macro constant)

Types

tm	calendar time type (class)
time_t	time since epoch type (typedef)
clock_t	process running time (typedef)