Program support utilities

 

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

 

Program support utilities

Program termination
abort exit quick_exit (C11) _Exit (C99)	atexit at_quick_exit (C11) EXIT_SUCCESSEXIT_FAILURE
Unreachable control flow
unreachable (C23)
Communicating with the environment
getenvgetenv_s (C11)	system
Memory alignment query
memalignment (C23)
Signals
signal raise sig_atomic_t	SIG_DFLSIG_IGN SIG_ERR
Signal types
SIGABRTSIGFPESIGILL	SIGINTSIGSEGVSIGTERM
Non-local jumps
setjmp	longjmp
Types
jmp_buf

 

Program termination

The following functions manage program termination and resource cleanup.

Template:c/program/dcl list abortTemplate:c/program/dcl list exitTemplate:c/program/dcl list quick exitTemplate:c/program/dcl list ExitTemplate:c/program/dcl list atexitTemplate:c/program/dcl list at quick exitTemplate:c/program/dcl list EXIT status

Defined in header <stdlib.h>

Communicating with the environment

Template:c/program/dcl list systemTemplate:c/program/dcl list getenv

Signals

Several functions and macro constants for signal management are provided.

Template:c/program/dcl list signalTemplate:c/program/dcl list raiseTemplate:c/program/dcl list SIG strategiesTemplate:c/program/dcl list SIG ERRTemplate:c/program/dcl list SIG types

Defined in header <signal.h>
sig_atomic_t	the integer type that can be accessed as an atomic entity from an asynchronous signal handler (typedef)
Signal types

Non-local jumps

Template:c/program/dcl list setjmpTemplate:c/program/dcl list longjmpTemplate:c/program/dcl list jmp buf

Defined in header <setjmp.h>

Types