Thread: Array of arrays of structs

I have the following struct:

Code:

struct Frame {
    unsigned char digit;    
    unsigned char seg;     
    unsigned char onoff;   
    unsigned char dur;      
};

I have several arrays of these structs, all different lengths. I'd like to pull these arrays together into a single array so I can access them more easily. Something that would let me do something like this (in pseudo code):

Code:

minor_array1[] = {Frame, Frame, Frame};
minor_array2[] = {Frame, Frame, Frame, Frame, Frame};
minor_array3[] = {Frame, Frame, Frame, Frame};

master_array[] = {minor_array1, minor_array2, minor_array3};

for (i = 0; i < 3; i++) 
  for (j = 0; j < length_of(master_array[i]); j++) {
    master_array[i][j].digit = 6;
    master_array[i][j].seg = 7;
    master_array[i][j].onoff = 8;
    master_array[i][j].dur = 9;
  }

Thanks for any suggestions.

Thanks for the tips. I can do either one, but I can't figure out how to define and initialize master_array. If I try the obvious way listed above, my compiler throws an error (something like type mismatch, but I'm not at my PC right now).

To me at least it seems like you should just accept that there will be some unused Frames in the array. Decide on some values which mean "unused frame" and place accordingly.

struct Frame master[3][5];

This is basically what you asked for, three arrays of five Frames.

Thanks, but how do I make the assignments? Do I have to assign each element of each minor array to a corresponding element in the master array, or is there a way to assign each entire minor array to the master?

Can you show an example?

You know how. You've written similar code, just try.

I didn't understand laserlight's reply, which is why I asked for an example.