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#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 section dosexterr.
not ANSI, not POSIX
_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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