C process control: Difference between revisions

Revision as of 15:14, 25 November 2011

Revision as of 15:29, 25 November 2011

Line 3:

{{move to|C process control}}

'''C programprocess control operations''' arerefers to a group of functions in the [[C standard library|standard library]] of the [[C programming language]] implementing basic programprocess control operations.<ref>{{cite book|last=Crawford|first=Tony|coauthors=Peter Prinz|title=C in Nutshell|publisher=O'Reilly|___location=§16.11 - ''Process Control''|date=December 2005|pages=618|isbn=0-596-00697-7}}</ref><ref>{{cite book | url=http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1124.pdf | title=ISO/IEC 9899:1999 specification | at=p. 315, § 7.20.4 "Communication with the environment" | accessdate=25 November 2011}}</ref> 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.

| url=http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1124.pdf

| title=ISO/IEC 9899:1999 specification

| at=p. 315, § 7.20.4 "Communication with the environment"

}}</ref>

==Overview of functions==

The programprocess control functions are defined in the <code>stdlib.h</code> header (<code>cstdlib</code> header in C++).

; Terminating a program

*<code>{{man|shanchor|abort|SUS||inline}}<code>[http://en.cppreference.com/w/cpp/utility/program/abort abort]</code> - causes abnormal program termination (without cleaning up)

*<code>{{man|shanchor|exit|SUS||inline}}<code>[http://en.cppreference.com/w/cpp/utility/program/exit exit]</code> - causes normal program termination with cleaning up

*<code>{{man|shanchor|_Exit|SUS||inline}}<code>[http://en.cppreference.com/w/cpp/utility/program/_Exit _Exit]</code> - causes normal program termination without cleaning up

*<code>{{man|shanchor|atexit|SUS||inline}}<code>[http://en.cppreference.com/w/cpp/utility/program/atexit atexit]</code> - registers a function to be called on exit() invocation

; Communicating with the environment

*<code>{{man|shanchor|getenv|SUS||inline}}<code>[http://en.cppreference.com/w/cpp/utility/program/getenv getenv]</code> - accesses the list of the environment variables

*<code>{{man|shanchor|system|SUS||inline}}<code>[http://en.cppreference.com/w/cpp/utility/program/system system]</code> - calls the host environment's command processor

==References==

Line 30 ⟶ 26:

[[Category:C Standard Library]]

{{prog-lang-stub}}