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{{C Standard Library}}
'''C program control operations''' are a group of functions in the [[C standard library|standard library]] of the [[C programming language]] implementing basic program control operations.{{cn}}
==Overview of functions==
The program control functions are defined in the <tt>stdlib.h</tt> header (<tt>cstdlib</tt> header in C++).
; Terminating a program
*<tt>{{man|sh|abort|SUS||inline}}</tt> - causes abnormal program termination (without cleaning up)
*<tt>{{man|sh|exit|SUS||inline}}</tt> - causes normal program termination with cleaning up
*<tt>{{man|sh|_Exit|SUS||inline}}</tt> - causes normal program termination without cleaning up
*<tt>{{man|sh|atexit|SUS||inline}}</tt> - registers a function to be called on exit() invocation
; Communicating with the environment
*<tt>{{man|sh|getenv|SUS||inline}}</tt> - accesses the list of the environment variables
*<tt>{{man|sh|system|SUS||inline}}</tt> - calls the host environment's command processor
==References==
{{reflist}}
==External links==
{{wikibooks|C Programming|C program control operations|C Programming/C Reference}}
[[Category:C Standard Library]]
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