Re: Simple program to find average of 3 numbers

["Robert I. Eachus" <rieachus@attbi.com>]

prashna wrote:
 > Hi friends,
 >
 > What is wrong in the following program which is giving constraint
 > error?
 >
 > procedure average is type ONE_TO_100 is range 1 .. 100;
 >
 > OBJ1, OBJ2, OBJ3, AVG  : ONE_TO_100; begin OBJ1 := 70; OBJ2 := 70;
 > OBJ3 := 70; AVG := OBJ1+OBJ2+OBJ3/3; end average;

I guess the right answer is that nothing is wrong with it, if you
want to be sure that you will get Constraint_Error.  As written, the 
code is required to raise Constraint_Error.

Oh, and then I could talk about your formatting, and identifier style. 
But I will address those by example.  Try:

procedure Average is
   subtype One_to_100 is Integer range 1 .. 100;
   Obj_1, Obj_2, Obj_3: One_to_100 := 70;
   Avg: One_to_100;
begin
   Avg := (Obj_1+Obj_2+Obj_3)/3;
   -- I assume you really wanted the average, rather than 163.
end Average;

-- 

                                                   Robert I. Eachus

�In an ally, considerations of house, clan, planet, race are
insignificant beside two prime questions, which are: 1. Can he shoot? 2.
Will he aim at your enemy?� -- from the Laiden novels by Sharon Lee and
Steve Miller.