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program tarray17;
{$mode objfpc}
{$modeswitch arrayoperators}
{$COperators on}
function CheckArray(aArr, aExpected: array of LongInt): Boolean;
var
i: LongInt;
begin
if Length(aArr) <> Length(aExpected) then
Exit(False);
for i := Low(aArr) to High(aArr) do
if aArr[i] <> aExpected[i] then
Exit(False);
Result := True;
end;
var
a: array of LongInt;
begin
a := [1, 2, 3];
a := a + [4];
if not CheckArray(a, [1, 2, 3, 4]) then
Halt(1);
a := [0] + a;
if not CheckArray(a, [0, 1, 2, 3, 4]) then
Halt(2);
a += [5];
if not CheckArray(a, [0, 1, 2, 3, 4, 5]) then
Halt(3);
Writeln('ok');
end.
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