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I am new to C++ and have some query related to below code snippet

  1. How to initialize the members of struct trackcmdtime using "struct initialization list - AlertTrackingState() ?

    typedef struct trackcmdtime {
   uint64_t arrive_time_ms;
   uint64_t diff_ms;
} TrackCmdTime;


Class Port {

 Public:
 .........

 Private:

  struct AlertTrackingState {
    Mutex mutex;                            

    RejectAlertTrackingList list;  
    uint32_t list_count;

    uint64_t req_time_ms;

    TrackCmdTime track;    // **Quest-1**

    // Initializer
    AlertTrackingState() : mutex(), list(), list_count(0), req_time_ms(0) {}  

  } _alert_tracking_state;
}

 // Constructor
 Port::Port() :
   _alert_tracking_state()
 {
   ........   
 }
Abhinav
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    *"What is the difference in behavior if I add `track()` and `track(0)`..."* The difference is that `track()` is value initialization. This is explained in any beginner [c++ book](https://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-list) and various SO posts. For example, [What does int() do in C++?](https://stackoverflow.com/questions/17131911/what-does-int-do-in-c) – Jason Sep 15 '22 at 09:48
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    Also, one question per post. – Jason Sep 15 '22 at 09:49

0 Answers0