Question: typedef struct tree _ node { shape _ t * shape; / / Shape associated with the node struct tree _ node * left; /

typedef struct tree_node {
shape_t* shape; // Shape associated with the node
struct tree_node* left; // Left subtree
struct tree_node* right; // Right subtree
} tree_node_t;
#define MAX_DEPTH 30
typedef struct {
tree_node_t* curr; // Pointer to the current node
unsigned int depth; // Current depth in the tree (root is at depth 0)
tree_node_t* parents[MAX_DEPTH]; // Pointer to parent nodes
} tree_iterator_t; // Helper struct for iterating through a tree -- represents a current location within the tree

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