Compilare: user.c: In function ‘BFS’: user.c:250:4: warning: passing argument 1 of ‘get_first_elem_list’ from incompatible pointer type [enabled by default] el = get_first_elem_list(V[node]); ^ user.c:175:5: note: expected ‘struct node_list **’ but argument is of type ‘struct node_list *’ int get_first_elem_list(node_list **node) ^ user.c:258:5: warning: passing argument 1 of ‘remove_first_list’ from incompatible pointer type [enabled by default] remove_first_list(V[node]); ^ user.c:165:6: note: expected ‘struct node_list **’ but argument is of type ‘struct node_list *’ void remove_first_list(node_list **node) ^ user.c: In function ‘main’: user.c:295:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &N, &M); ^ user.c:299:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &j, &k); ^