_Exit
From cppreference.com
Defined in header
<stdlib.h>
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void _Exit( int exit_code );
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(since C99) | |
Causes normal program termination to occur without completely cleaning the resources.
Destructors of variables with automatic, thread local and static storage durations are not called. Functions passed to at_quick_exit() or atexit() are not called. Whether open resources such as files are closed is implementation defined. If exit_code
is EXIT_FAILURE, an implementation-defined status, indicating unsuccessful termination, is returned. In other cases implementation-defined status value is returned.
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[edit] Parameters
exit_code | - | exit status of the program |
[edit] Return value
(none)
[edit] Example
Run this code
#include <stdlib.h> #include <stdio.h> /* _Exit does not call functions registered with atexit. */ void f1() { puts("pushed first"); } void f2() { puts("pushed second"); } int main(void) { printf("Enter main()\n"); atexit(f1); atexit(f2); fflush(stdout); /* _Exit does not flush unwritten buffered data */ _Exit(0); }
Output:
Enter main()
[edit] References
- C11 standard (ISO/IEC 9899:2011):
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- 7.22.4.5 The _Exit function (p: 352)
- C99 standard (ISO/IEC 9899:1999):
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- 7.20.4.4 The _Exit function (p: 316)
[edit] See also
causes abnormal program termination (without cleaning up) (function) |
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causes normal program termination with cleaning up (function) |
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C++ documentation for _Exit
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