Re: List of C function usable in Ada

[Mark Johnson <mark_h_johnson@raytheon.com>]

Sim Con wrote:
> 
> Hello! where can i find a list of C functions (with parameters and what
> they do)usable in Ada? Thanx in advance ^_^
> 
Hmm. I don't quite think you received a direct answer to your query.
Just about any C function can be called from Ada with a suitable
compiler. To get a list of C functions (on Unix or Linux), I suggest
running xman, select Manual Page, and then select sections 2 or 3 to get
a list of system calls and functions. Depending on your set up, a few
other sections may also have callable functions - YMMV.

Of course, the next question is "how" to call them and the necessary
interfaces that are needed. As commented in other replies, you *could*
call strlen to determine the length of a null terminated string.
However, a string in Ada may or may not be terminated by nulls. You
would have to do the conversion between Ada and C strings before calling
strlen. You should use the features documented in Annex B (interface
pragmas, the package Interfaces) as well.

Having said all that, you might be better off using the capabilities
that Ada already provides before calling any C functions.

Good luck.
  --Mark