- MODULE RPtr;
- VAR ExitCode : INTEGER;
- p, q : POINTER TO INTEGER;
- BEGIN
- ExitCode := 0;
- p := NIL;
- q := p;
- IF p = NIL THEN ExitCode := ExitCode + 1 END;
- IF q = NIL THEN ExitCode := ExitCode + 10 END;
- IF p = q THEN ExitCode := ExitCode + 100 END
- END RPtr.
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