Question: QUESTION 17 1 void foo (TreeNode *node) 2 3 if(node= NULL) return; 4 5 6 foo (node->left); 7 foo(node->right); 8 cout ?? node-?data

QUESTION 17 1 void foo (TreeNode *node) 2 3 if(node= NULL) return; 4 5 6 foo (node->left); 7 foo(node->right); 8 cout ?? node-?data image text in transcribed

QUESTION 17 1 void foo (TreeNode *node) 2 3 if(node= NULL) return; 4 5 6 foo (node->left); 7 foo(node->right); 8 cout ?? node-?data

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