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program Example111;
{ Program to demonstrate the Include/Exclude functions }
Type
TEnumA = (aOne,aTwo,aThree);
TEnumAs = Set of TEnumA;
Var
SA : TEnumAs;
Procedure PrintSet(S : TEnumAs);
var
B : Boolean;
procedure DoEl(A : TEnumA; Desc : String);
begin
If A in S then
begin
If B then
Write(',');
B:=True;
Write(Desc);
end;
end;
begin
Write('[');
B:=False;
DoEl(aOne,'aOne');
DoEl(aTwo,'aTwo');
DoEl(aThree,'aThree');
Writeln(']')
end;
begin
SA:=[];
Include(SA,aOne);
PrintSet(SA);
Include(SA,aThree);
PrintSet(SA);
Exclude(SA,aOne);
PrintSet(SA);
Exclude(SA,aTwo);
PrintSet(SA);
Exclude(SA,aThree);
PrintSet(SA);
end.
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