#include#include using namespace boost::property_tree; int main() { ptree pt; read_xml("data.xml", pt); int my_value = pt.get ("my_node"); return 0; }
struct Node { int data; Node* left; Node* right; }; int getValue(Node* root, int key) { if (root == NULL || root->data == key) { return root->data; } else if (key < root->data) { return getValue(root->left, key); } else { return getValue(root->right, key); } }In this example, `getValue` takes in a pointer to the root node of a binary search tree and an integer key, and recursively searches the tree to find the node with the matching key. Once it finds the desired node, it returns its corresponding value. The package library in this case would be Boost for the first example, and the C++ standard library for the second example.