Date and time utilities - cppreference.com
Functions
Time manipulation | |
Defined in header | |
| computes the difference between times (function) [edit] | |
| returns the current calendar time of the system as time since epoch (function) [edit] | |
| returns raw processor clock time since the program is started (function) [edit] | |
(C11) |
returns the calendar time in seconds and nanoseconds based on a given time base (function) [edit] |
(C23) |
returns the resolution of calendar time based on a given time base (function) [edit] |
Format conversions | |
Defined in header | |
(deprecated in C23)(C11) |
converts a tm object to a textual representation (function) [edit] |
(deprecated in C23)(C11) |
converts a time_t object to a textual representation (function) [edit] |
| converts a tm object to custom textual representation (function) [edit] | |
Defined in header | |
(C95) |
converts a tm object to custom wide string textual representation (function) [edit] |
Defined in header | |
(C23)(C11) |
converts time since epoch to calendar time expressed as Coordinated Universal Time (UTC) (function) [edit] |
(C23)(C11) |
converts time since epoch to calendar time expressed as local time (function) [edit] |
| converts calendar time to time since epoch (function) [edit] | |
Constants
Types
References
- C23 standard (ISO/IEC 9899:2024):
- 7.27 Date and time <time.h> (p: TBD)
- 7.29.5.1 The wcsftime function (p: TBD)
- 7.31.14 Date and time <time.h> (p: TBD)
- C17 standard (ISO/IEC 9899:2018):
- 7.27 Date and time <time.h> (p: 284-291)
- 7.29.5.1 The wcsftime function (p: 320-321)
- 7.31.14 Date and time <time.h> (p: 333)
- C11 standard (ISO/IEC 9899:2011):
- 7.27 Date and time <time.h> (p: 388-397)
- 7.29.5.1 The wcsftime function (p: 439-440)
- 7.31.14 Date and time <time.h> (p: 456)
- C99 standard (ISO/IEC 9899:1999):
- 7.23 Date and time <time.h> (p: 338-347)
- 7.24.5.1 The wcsftime function (p: 385-386)
- C89/C90 standard (ISO/IEC 9899:1990):
- 4.12 DATE AND TIME <time.h>