[c] GCC: array type has incomplete element type

I have declared a struct, and I try to pass an array of those structs (as well as a double array of doubles, and an integer) into a function. I get an "array type has incomplete element type" message from gcc when I compile it. What have I got wrong in how I pass the struct into the function?

typedef struct graph_node {
  int X;
  int Y;
  int active;
} g_node;

void print_graph(g_node graph_node[], double weight[][], int nodes);

I have also tried struct g_node graph_node[], but I get the same thing.

The compiler needs to know the size of the second dimension in your two dimensional array. For example:

void print_graph(g_node graph_node[], double weight[][5], int nodes);