C date and time functions

The C date and time functions are a group of functions in the standard library of the C programming language implementing date and time manipulation operations. They provide support for time acquisition, conversion between date formats, and formatted output to strings.

The C date and time operations are defined in the time.h header file (ctime header in C++).

The following C source code prints the current time to the standard output stream.

The output is:

...
Wikipedia