01-23-2006
C functions that write to a device or a file return the error
ENOTTY - the error responsible for 'Not a typewriter'.
sscanf reads data. It does return that error number.
errno, once set by an error, is left unchanged until another error happens.
That means if printf posted the error, but you checked the error later, right
after the sscanf() call, it would look to you like sscanf() failed.
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stty: : Not a typewriter
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stty: : Not a typewriter
stty: : Not a typewriter
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(sys10:pt:/pf>) cat 122974qqq.s
RUNAS Version 2007.10.07 Run on Dec 11 2008 10:09:36 AM
UNIX Process: 26021
Login User : root
PFW User : s08280
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LEARN ABOUT SUNOS
wsscanf
wsscanf(3C) Standard C Library Functions wsscanf(3C)
NAME
wsscanf - formatted input conversion
SYNOPSIS
#include<stdio.h>
#include <widec.h>
int wsscanf(wchar_t *s, const char *format, /* pointer */ ... );
DESCRIPTION
The wsscanf() function reads Process Code characters from the Process Code string s, interprets them according to the format, and stores
the results in its arguments. It expects, as arguments, a control string format, and a set of pointer arguments indicating where the con-
verted input should be stored. The results are undefined if there are insufficient args for the format. If the format is exhausted while
args remain, the excess args are simply ignored.
The conversion specifications and behavior of wsscanf() are the same as the regular sscanf(3C) function except that the source is a Process
Code string for wsscanf() and on Extended Unix Code (EUC) character string for sscanf(3C).
RETURN VALUES
Upon successful completion, wsscanf() returns the number of characters matched. Otherwise, it returns a negative value.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO
wsprintf(3C), printf(3C), scanf(3C), attributes(5)
SunOS 5.10 29 Dec 1996 wsscanf(3C)