c++ - Understand the following pointer code written in c -

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i trying understand piece of code , not experienced programmer. can please me understand meant statement here?

 dimage *filterdimage;       float *lp = filterdimage->pixels[0];//statement a, what's going on?

here, dimage struct defined : 

 typedef struct dimage{  int width;   int height;  float **pixels; }

filterdimage->pixels accesses pixels member in filterdimage.

filterdimage->pixels[0] accesses first element in array pixels points to. since pixels of type float**, elements of type float*.

float *lp = filterdimage->pixels[0] assigns pointer lp.


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