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_set_errno 

Set the value of the errno global variable.


errno_t _set_errno( 
   int value 
);

Parameters

[in] value

The new value of errno.

Returns zero if successful.

Possible values are defined in Errno.h. Also, see errno Constants.

// crt_set_errno.c
#include <stdio.h>
#include <errno.h>

int main()
{
   _set_errno( EILSEQ );
   perror( "Oops" );
}

Output

Oops: Illegal byte sequence

Routine Required header Optional header Compatibility

_set_errno

<stdlib.h>

<errno.h>

Windows 95, Windows 98, Windows 98 Second Edition, Windows Millennium Edition, Windows NT 4.0, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003

For more compatibility information, see Compatibility in the Introduction.

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