program Example;
type
charSet = set of Char;
var
st: charSet;
ch: Char;
function printSet(st: charSet): integer;
var
ch: Char;
begin
for ch in st do
begin
write(ch + ' ');
end;
printSet := 0;
end;
begin
st := ['a', 'b', 'c', 'd', 'e'];
printSet(st);
end.
(*
run:
a b c d e
*)