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_doserrno

Syntax

 
#include <errno.h>
 
extern int _doserrno;

Description

Whenever a DOS call returns a failure indication, this variable is assigned the value of the error code returned by the failed DOS call.

For a list of the error codes and their short descriptions, see dosexterr.

Portability

ANSI/ISO C No
POSIX No

Example

 
 _doserrno = 0;
 fprintf (stdprn, "Hello, world!\r\n\f");
 if (_doserrno == 0x1c)
   fprintf (stderr, "The printer is out of paper!\n");

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  Copyright 2004   by DJ Delorie     Updated Apr 2004