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Full Discussion: override the function in C
Top Forums Programming override the function in C Post 302094716 by jim mcnamara on Tuesday 31st of October 2006 08:38:02 AM
Old 10-31-2006
The error comes from the fact that cpp included stdio.h which automatically brings a function prototype for sscanf into the file the compiler sees.

Suggestions:
1. Park your sscanf() module in a separate source file and place every module that calls your sscanf() in that same separate file. In the same file, declare any other function from stdio.h as extern. If you have only one source file, remove stdio.h from the include list and declare everything as extern. You could also make a LOCAL copy of stdio.h and remove references to sscanf from it, rename it, then
Code:
#include "mystdio.h"

2. Rename your sscanf() as mysscanf()
 

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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)
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