| C standard library (libc) |
|---|
| General topics |
| Miscellaneous headers |
C process control refers to a group of functions in the standard library of the C programming language implementing basic process control operations.[1][2] The process control operations include actions such as termination of the program with various levels of cleanup, running an external command interpreter or accessing the list of the environment operations.
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Transcription
Overview of functions
The process control functions are defined in the stdlib.h header (cstdlib header in C++).
| Function | Description | |
|---|---|---|
| Terminating a program |
abort
|
causes abnormal program termination (without cleaning up) |
exit
|
causes normal program termination with cleaning up | |
_Exit
|
causes normal program termination without cleaning up (C99) | |
atexit
|
registers a function to be called on exit() invocation | |
quick_exit
|
causes normal program termination without cleaning up, but with IO buffers flushed (C11) | |
at_quick_exit
|
registers a function to be called on quick_exit() invocation | |
| Communicating with the environment |
getenv
|
accesses the list of the environment variables |
system
|
calls the host environment's command processor |
References
- ^ Crawford, Tony; Peter Prinz (December 2005). C in a Nutshell. §16.11 – Process Control: O'Reilly. p. 618. ISBN 0-596-00697-7.
{{cite book}}: CS1 maint: location (link) - ^ ISO/IEC 9899:1999 specification (PDF). p. 315, § 7.20.4 "Communication with the environment". Retrieved 25 November 2011.
External links
Wikibooks has a book on the topic of: C Programming/C Reference
This page was last edited on 11 December 2022, at 17:42