std::clock_t

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C++ Standard Library
Language 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
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

Defined in header <ctime>
typedef /* unspecified */ clock_t;

Arithmetic type capable of representing the process running time of implementation-defined range and precision.

[edit] See also

clock	returns raw processor clock time since the program is started (function)
CLOCKS_PER_SEC	number of processor clock ticks per second (macro constant)