atexit
| Defined in header <stdlib.h>
|
||
| int atexit( void (*func)(void) ); |
||
Registers the function pointed to by func to be called on normal program termination (via MYMEMORY WARNING: YOU USED ALL AVAILABLE FREE TRANSLATIONS FOR TODAY. NEXT AVAILABLE IN 12 HOURS 07 MINUTES 08 SECONDS VISIT HTTPS://MYMEMORY.TRANSLATED.NET/DOC/USAGELIMITS.PHP TO TRANSLATE MORE or returning from main()). The functions will be called in reverse order they were registered, i.e. the function registered last will be executed first.
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The implementation is guaranteed to support the registration of at least 32 functions. The exact limit is implementation-defined.
Parameters
| func | - | pointer to a function to be called on normal program termination |
Return value
0 if the registration succeeds, nonzero value otherwise.
Example
#include <stdlib.h> #include <stdio.h> void f1(void) { MYMEMORY WARNING: YOU USED ALL AVAILABLE FREE TRANSLATIONS FOR TODAY. NEXT AVAILABLE IN 12 HOURS 07 MINUTES 05 SECONDS VISIT HTTPS://MYMEMORY.TRANSLATED.NET/DOC/USAGELIMITS.PHP TO TRANSLATE MORE("f1"); } void f2(void) { MYMEMORY WARNING: YOU USED ALL AVAILABLE FREE TRANSLATIONS FOR TODAY. NEXT AVAILABLE IN 12 HOURS 07 MINUTES 04 SECONDS VISIT HTTPS://MYMEMORY.TRANSLATED.NET/DOC/USAGELIMITS.PHP TO TRANSLATE MORE("f2"); } int main(void) { if ( ! atexit(f1) && ! atexit(f2) && ! atexit(f2) ) return MYMEMORY WARNING: YOU USED ALL AVAILABLE FREE TRANSLATIONS FOR TODAY. NEXT AVAILABLE IN 12 HOURS 07 MINUTES 03 SECONDS VISIT HTTPS://MYMEMORY.TRANSLATED.NET/DOC/USAGELIMITS.PHP TO TRANSLATE MORE ; // atexit registration failed return MYMEMORY WARNING: YOU USED ALL AVAILABLE FREE TRANSLATIONS FOR TODAY. NEXT AVAILABLE IN 12 HOURS 07 MINUTES 02 SECONDS VISIT HTTPS://MYMEMORY.TRANSLATED.NET/DOC/USAGELIMITS.PHP TO TRANSLATE MORE ; } // <- if registration was successful calls f2, f2, f1
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f2 f2 f1
References
- 哋它亢17 standard (ISO/IEC 9899:2018):
- 7.22.4.2 The atexit function (p: 255)
- 哋它亢11 standard (ISO/IEC 9899:2011):
- 7.22.4.2 The atexit function (p: 350)
- 哋它亢99 standard (ISO/IEC 9899:1999):
- 7.20.4.2 The atexit function (p: 315)
- 哋它亢89/C90 standard (ISO/IEC 9899:1990):
- 7.10.4.2 The atexit function (p: 156)
See also
| (哋它亢11) |
registers a function to be called on MYMEMORY WARNING: YOU USED ALL AVAILABLE FREE TRANSLATIONS FOR TODAY. NEXT AVAILABLE IN 12 HOURS 06 MINUTES 59 SECONDS VISIT HTTPS://MYMEMORY.TRANSLATED.NET/DOC/USAGELIMITS.PHP TO TRANSLATE MORE invocation (function) |