Utility library

 

C

Compiler support

Language

Headers

Type support

Program utilities

Variadic function support

Error handling

Dynamic memory management

Strings library

Algorithms

Numerics

Date and time utilities

Input/output support

Localization support

Concurrency support (C11)

Technical Specifications

Symbol index

 

C language

Basic concepts

Keywords

Preprocessor

Statements

Expressions

Initialization

Declarations

Functions

Miscellaneous

History of C

Technical Specifications

 

Utilitities library

Language support Type support (basic types) Dynamic memory management malloc Error handling assert Variadic functions General-purpose utilities Program utilities abort atexit system raise Date and time time clock

 

C includes a variety of utility libraries. These libraries can be broadly divided into two groups:

• language support libraries, and
• general-purpose libraries.

Language support

Language support libraries provide functions that interact closely with language features and support common language idioms.

Type support

Basic types (e.g. size_t, NULL)

Dynamic memory management

(e.g. malloc)

Error handling

Assertions (e.g. assert)

Variadic functions

Support for functions that take an arbitrary number of parameters (via e.g. va_start, va_arg, va_end)

General-purpose utilities

Program utilities

Termination (e.g. abort, atexit), environment (e.g. system), signals (e.g. raise)

Date and time

Time tracking (e.g. time, clock)

See also

C++ documentation for Utility library