_set_errno
Set the value of the errno global variable.
Syntax
errno_t _set_errno( int error_value );
Parameters
error_value
The new value of errno.
Return value
Returns zero if successful.
Remarks
Possible values are defined in Errno.h. Also, see errno constants.
By default, this function's global state is scoped to the application. To change this behavior, see Global state in the CRT.
Example
// crt_set_errno.c
#include <stdio.h>
#include <errno.h>
int main()
{
_set_errno( EILSEQ );
perror( "Oops" );
}
Oops: Illegal byte sequence
Requirements
| Routine | Required header | Optional header |
|---|---|---|
_set_errno |
<stdlib.h> | <errno.h> |
For more compatibility information, see Compatibility.