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Stdlib.h

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C standard library (libc)
General topics
Miscellaneous headers

C program control operations are a group of functions in the standard library of the C programming language implementing basic program control operations.[1]

Function overview

The program 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 up
  • atexit - registers a function to be called on exit() invocation
Communicating with the environment
  • getenv - accesses the list of the environment variables
  • system - calls the host environment's command processor

References

  1. ^ ISO/IEC 9899:1999 specification (PDF). p. 315, § 7.20.4 "Communication with the environment".
The Wikibook C Programming has a page on the topic of: C Programming/C Reference
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