Question: Draw a memory diagram to outline the difference between * * ptr _ to _ node _ ptr , and * ptr _ to _

Draw a memory diagram to outline the difference between **ptr_to_node_ptr, and *ptr_to_node_ptr.
void double_ptr_insert_back(int n,
struct llnode **ptr_to_node_ptr){
// TRACE 1
if (*ptr_to_node_ptr == NULL){
*ptr_to_node_ptr = cons(n, NULL);
} else {
struct llnode *node =*ptr_to_node_ptr;
while (node->next != NULL){
node = node->next;
}
node->next = cons(n, NULL);
}
// TRACE 2
}
Draw a memory diagram to outline the difference

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