Reference
C Library
IOstream Library
Strings library
STL Containers
STL Algorithms
Miscellaneous
C Library
cassert (assert.h)
cctype (ctype.h)
cerrno (errno.h)
cfloat (float.h)
ciso646 (iso646.h)
climits (limits.h)
clocale (locale.h)
cmath (math.h)
csetjmp (setjmp.h)
csignal (signal.h)
cstdarg (stdarg.h)
cstddef (stddef.h)
cstdio (stdio.h)
cstdlib (stdlib.h)
cstring (string.h)
ctime (time.h)
ctime (time.h)
functions:
asctime
clock
ctime
difftime
gmtime
localtime
mktime
strftime
time
macros:
CLOCKS_PER_SEC
NULL
types:
clock_t
size_t
time_t
struct tm


time_t

type
<ctime>

Time type

Type capable of representing times and support arithmetical operations.

This type is returned by the time function and is used as parameter by some other functions of the <ctime> header.

It is almost universally expected to be an integral value representing the number of seconds elapsed since 00:00 hours, Jan 1, 1970 UTC. This is due to historical reasons, since it corresponds to a unix timestamp, but is widely implemented in C libraries across all platforms.