pass ... to scanf

[ionutdinulescu]

I have a function fct(int a, format, ...)
from this function I would like to call the function
sscanf(s, format, ...) where ... must be the arguments passed to fct. Is this thing possible ?

 

[sedj]

Have a look at stdarg.h :

http://www.opengroup.org/onlinepubs/009695399/basedefs/stdarg.h.html

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[ionutdinulescu]

Thanks, but I would like not to use a terminator (since it may be in the list of arguments)

 

[chipperMDW]

It's not possible with [tt]scanf[/tt], but it is possible with [tt]vscanf[/tt].

You'll have to [tt]va_start[/tt] your arguments into a [tt]va_list[/tt], call [tt]vsprintf[/tt] with the args, then [tt]va_end[/tt] them after the call.

Information on [tt]vscanf[/tt] and friends
A closely related example

 

[chipperMDW]

Oops; I meant call [tt]vscanf[/tt] instead of [tt]vsprintf[/tt], of course.

 

[ionutdinulescu]

thanks for reply... but the function is SSCANF not scanf and unfortunately there is not a vsscanf version for it

 

[chipperMDW]

Well, there is a [tt]vsscanf[/tt], but it was specified in C99, and some libraries don't fully support that, yet.

If you don't have access to that function, you'll have to see if your library (or compiler or preprocessor) supports an alternative. Otherwise, it might not be possible to do what you're trying to do.