How to pass mutiple matrices to a linked list

This is a discussion on How to pass mutiple matrices to a linked list within the C Programming forums, part of the General Programming Boards category; Can someone suggest me how can i pass more than 1 matrix to a linked list to perform some operation. ...

  1. #1
    C++ Beginner !!!
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    How to pass mutiple matrices to a linked list

    Can someone suggest me how can i pass more than 1 matrix to a linked list to perform some operation.
    I have stored my matrices as 3D matrices.
    it is row x columns x iterations.
    say I have 10 x 10 matrix but i have 20 of them.
    I wan to pass all 20 to the next function i.e Linked list that checks th connectivity in the matrices.

    My program runs fine for the first matrix that I get from the program and then exits.
    Any suggestion is welcomed.

    thanks.

  2. #2
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    Post up how the array is declared. Also, the function in question. It sounds like it's not a contiguous memory (aka a "true") array.

  3. #3
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    the array declared is :

    Code:
    int ***array2;
     array2 = (int ***)malloc(sizeof(int **) * iter);
      for (i = 0 ;  i < iter; i++) {
        array2[i] = (int **)malloc(sizeof(int *) * nodes);  
        for (j = 0; j < nodes; j++) {          
          array2[i][j] = (int *)malloc(sizeof(int) * nodes)
      for (k = 0; k < nodes; k++)
          array2[i][j][k] = i * j * k;
    
    
    for (i=0; i<iter; i++){
        for (j=0; j<nodes; j++){
          for (k=0; k<nodes; k++){
    	array2[i][j][k] = array1[j][k];    (//array 1 is 2D array )
    
    	printf("%d\t",array2[i][k][j])   
    return array2;
    then i pass the value of array 2 to the next function:

    Code:
    void Table(int , int ***array2, struct Vertex vert[size]);
    here only 1st matrix is read not the all.

  4. #4
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    I'm no expert on this, but you've got 3 calls to malloc(), and C has no guarantee that all three calls will be given contiguous addresses.

    I believe it was Laserlight who posted about how to force this, last week.

    My only suggestion would be to force malloc() to give you one contiguous block of memory, instead of the (probable) three disjointed blocks it's giving you now.

    Of course, you could assign pointers to the other two malloc addresses, and pass them over to your function, but that seems like a funky way of handling it.

    See if you can find that post by Laserlight, and give it a Google. Meanwhile, this will "bump" your thread up so it will be seen more readily by the experts.

  5. #5
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    Finding indices efficiently

    In that thread, Salem describes on of many methods to force arrays to be contiguous in memory

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