C process control
| 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.
Overview of functions
The process control functions are defined in the stdlib.h header (cstdlib header in C++).
- 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 upatexit- registers a function to be called on exit() invocation
- Communicating with the environment
getenv- accesses the list of the environment variablessystem- calls the host environment's command processor
References
- ^ Crawford, Tony (December 2005). C in Nutshell. §16.11 - Process Control: O'Reilly. p. 618. ISBN 0-596-00697-7.
{{cite book}}: Unknown parameter|coauthors=ignored (|author=suggested) (help)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
The Wikibook C Programming has a page on the topic of: C Programming/C Reference
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