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Linked List of struct

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Linked List of struct

 
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  #1
Nov 20th, 2008
I am creating a linked list which links a struct of data together. However, this is my problem, if I declare struct Node first then the Event type wont exist, but if I declare struct Event first then nodePtr wont exist....im kinda stuck here as to how I should declare them.

C++ Syntax (Toggle Plain Text) 
  1. struct Event
  2. {
  3.        void addEvent();
  4.  
  5.        tm startTime, endTime;
  6.        string eventItem;
  7.        string eventNotes;
  8.        char allDay;
  9.        nodePtr head, tail;
  10.  
  11. };
  12.  
  13.  
  14. struct Node
  15. {
  16.        Event eventNode;
  17.        Node *next;
  18. };
  19.  
  20. typedef Node* nodePtr;
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Re: Linked List of struct

 
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  #2
Nov 20th, 2008
Not sure of what you want to accomplish here. This piece of info might help getting the same results using a different method.
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Re: Linked List of struct

 
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  #3
Nov 20th, 2008
ok what im trying to do have a list of Events (which are actually a struct type containning data such as time date etc). And my problem as can be seen above is that I do not know how to resolve their declarations. I cant declare struct Event first because it contains pointers to the next Event struct. And I cant declare struct Node first because the node is of Event type.
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Re: Linked List of struct

 
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  #4
Nov 21st, 2008
c++ Syntax (Toggle Plain Text) 
  1. struct Event
  2. {
  3.        void addEvent();
  4.  
  5.        tm startTime, endTime;
  6.        string eventItem;
  7.        string eventNotes;
  8.        char allDay;
  9.        nodePtr *head, *tail; //-- a pointer!, maybe...
  10.  
  11. };
  12.  
  13.  
  14. struct Node
  15. {
  16.        Event *eventNode; //-- a pointer!, maybe.
  17.        Node *next;
  18. };
  19.  
  20. typedef Node* nodePtr;
.:-cikara21-:.
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Re: Linked List of struct

 
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  #5
Nov 21st, 2008
Maybe, you confused the functionality of Event struct and Node struct.

There are two ways to reach you objective.
First,
C++ Syntax (Toggle Plain Text) 
  1. struct EventNode
  2. {
  3.   tm startTime, endTime;
  4.   string eventItem;
  5.   string eventNotes;
  6.   char allDay;
  7.  
  8.   EventNode* next;
  9. };
  10.  
  11. struct EventList
  12. {
  13.   void addEvent();
  14.   ... // other member functions used to sustain the list 
  15. private:
  16.   EventNode* head;
  17.   EventNode* tail;
  18. };

another way use the list of STL to store the event.

C++ Syntax (Toggle Plain Text) 
  1. struct Event
  2. {
  3.   tm startTime, endTime;
  4.   string eventItem;
  5.   string eventNotes;
  6.   char allDay;
  7. };
  8.  
  9. std::list<Event> eventList;
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Re: Linked List of struct

 
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  #6
Nov 21st, 2008
ah ok i get what u mean
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