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From: stt@dsd.camb.inmet.com (Tucker Taft)
Subject: Re: GNAT-Problem / Please Help !!
Message-ID: <Cz6BsH.GAE@inmet.camb.inmet.com>
Sender: news@inmet.camb.inmet.com
Organization: Intermetrics, Inc.
References: <39lbil$euf@tucs6.rz.tu-cottbus.de>
Date: Sat, 12 Nov 1994 21:31:29 GMT
Date: 1994-11-12T21:31:29+00:00
List-Id: <comp.lang.ada>

In article <39lbil$euf@tucs6.rz.tu-cottbus.de>,
Andreas Krohn <ak@informatik.tu-cottbus.de> wrote:

>I've a problem with the Set_Col() and Set_Line() Functions.
>Everytime I use a number the call works, but when i use a variable
>in the call the compiler says "invalid parameter list in call".
>Could anybody help an ada-beginner with the problem ?

You probably have a type mismatch.  Set_Col and Set_Line both expect
parameters of subtype Text_IO.Positive_Count.  When you use
numeric literals, you don't need to worry about the particular integer
type.  But when you use a variable, you need to declare it to be
of the right (sub)type, or convert it on use.  For example, the following
should work:

   C : Text_IO.Positive_Count;
 ...
   C := 22;
   Text_IO.Set_Col(C);

Alternatively, you can write:

   X : Integer;
 ...
   X := 22;
   Text_IO.Set_Col(Text_IO.Positive_Count(X));

The former is methodologically preferable, in general, because it makes
it clear that "C" represents a count to be used with Text_IO column
and line operations.

-Tucker Taft  stt@inmet.com
Intermetrics, Inc.
Cambridge, MA  02138
The problem is that 
>
>Thank you.
>