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Homework Alert!

Posted on 1998-04-29
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Last Modified: 2010-04-16
How many Pascal Experts it will take to answer with "Homework Alert!" as their first answer?
Please, I want to learn but I do not want  "Homework Alert" for an answer.

If Pascal did not contain contain sets for example:
type
   experts = [Kelly, Steve, Ron];
   expertSet = SET of experts;

How would I define my own abstract data type SET
by using functions and procedures?
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Question by:gokou
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3 Comments
 
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Expert Comment

by:jlove1
ID: 1216071
wouldn't set just be an array? what more functionality would you need.. an "in" function?
You'd just write comparsions. I'll write a unit for this if the points are upped.
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by:gokou
ID: 1216072
Adjusted points to 200
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LVL 3

Accepted Solution

by:
jlove1 earned 600 total points
ID: 1216073
here's some example source

uses dos,crt;
function inset(value : string;thisset : array of string) : boolean;
var
counter : integer;
begin;
for counter := 1 to sizeof(thisset) div sizeof(string) do
   begin
    if value = thisset[counter] then begin;
                                     inset := true;

                                     exit;
                                     end;
    writeln(counter);

    end;
    inset := false;

end;
const
myset : array[1..3] of string = ('hello','goodbye','whatever');


begin;
if inset('hello',myset) then writeln('hello is in the set');
if inset('notw',myset) then writeln('notw is in the set');

readln;
end.

in the above source, the set is just array of strings.
The array can be of any length, and the INSET function determines if the value passed to it is in the set passed to it. Give it a try in some of your own source to get the hang of it.

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