Re: Help - Call C function (with out parameter) from ADA95

[David Shochat <shochat@itg-sepg.logicon.com>]

Mikael Espersen wrote:
> 
> Hi,
> 
> Does anyone know how to call a C function with out a parameter from ADA95.
> As far as I know ADA is only allowing in parameters to functions. The C
> function also has a return value so I can't declare as a procedure. Any
> help would be appreciated Thanks in advance.
> 
> Eks. (C program code)
> 
> int InitArray(char* arr);

Seems to me that would just be:

function InitArray (Arr : in Interfaces.C.Strings.chars_ptr) return
Interfaces.C.int;

C doesn't have "out" parameters. In C everything is passed by value. One
gets the effect of call by reference by explicitly passing a pointer (by
value). Your InitArray() looks kind of dangerous since it doesn't have a
parameter to limit the number of characters it writes.
-- David