#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.
To interpret the error codes, please refer to your DOS reference.
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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