Hi everybody,

I've got a maybe simple question. Today I stumbled about a problem I can't determine. The way I saw it in Turbo Pascal years ago, I tried to implement a function as a parameter to another function. I'll send some example code below.

fpc yells at it with an Error: Wrong amount of parameters specified. Is this not implemented in fpc or am I stuck somewhere else?

Thanks for your hints in advance,

yours, Mario

Here's some example code to show my problem:

--8<--

type funcparam = function(x : real):real;
   function f1(x : real):real;
   begin
      f1:=1/(x*x+1);
   end;
   function f2(x : real):real;
   begin
      f2:=x*x+1;
   end;
   function integral(a,e : real; f:funcparam):real;
   begin
      integral:=(f(a)+f(e))*0.5*(e-a);
   end;
begin
   writeln(integral(1,3,f1));
   writeln(integral(1,3,f2));
end.

-->8--

Change this to
   writeln(integral(1,3,@f1));
   writeln(integral(1,3,@f2));

Or use the -So command-line parameter for more TP compatibility. Either should work.
This is probably in the FAQ, and surely in the documentation :-)

Michael.

I probably must have overread this.

Thanks to Michael!

Yours, Mario

PS: Btw., is there a special reason, why the mailing list server is overwriting the "Reply-To:"-Header? This has become really unpopular on many lists.