c++ array passing

There is a queue<DetectionResult> save_result_queue[2] in class a, which is passed to class b. How to define and receive save_result_queue in class b?

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Array queue usage example

There is mutex save_result_queue_mutex[2]; in class a. How to define and receive it in class b?

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Array queue usage example

class B {
public:
    B(std::queue<DetectionResult>* save_resul