Internal working of this code...

This is a discussion on Internal working of this code... within the C++ Programming forums, part of the General Programming Boards category; Well consider i have a structure as follows Code: struct list{ struct list *next[5]; }; now while adding new elements... ...

  1. #1
    Its not rocket science vasanth's Avatar
    Join Date
    Jan 2002
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    1,683

    Internal working of this code...

    Well consider i have a structure as follows

    Code:
    struct list{
     
    struct list *next[5];
     
    };

    now while adding new elements...

    previous->next[i]=new struct list;


    this will create a list and so on.. beofre the above statement previous->next[i] was equal to NULL... now consider I have a function as follows

    Code:
     
    void function(struct *list)
    {
    //this function will further build a tree below list
     
    list=new struct list //and so on
    list->next[i]=new struct list; //etc etc etc
    }
     
     
    now calling where previous->next[i] is NULL
     
    function(previous->next[i]);
    when the above is done the previous node holds no information of the tree below unless I pass the function with a pointer already pointing to a structure... why is this.... I know i have not explained things clearly but feel free to ask questions ........

  2. #2
    Registered User
    Join Date
    Nov 2001
    Posts
    1,348
    One solution is a pointer to a pointer.

    void function(Structlist **pPreviousList)
    {}

    Kuphryn

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