Answer Posted / tomás senart

There is a difference between a binary tree and a binary search tree.
A binary tree isn't organized in any sense. The values of it's nodes can be random and have no relationship to each other.

Here is a method for finding the biggest node on a binary tree.

typedef struct node {
int value;
struct tree *right;
struct tree *left;
} Node;

int biggest_node(Node *node)
{
int biggest_left, biggest_right;

biggest_left = node->left ? biggest_node(node->left) : node->value;
biggest_right = node->right ? biggest_node(node->right) : node->value;

if(node->value < biggest_left && node->value < biggest_right)
return biggest_left > biggest_right ? biggest_left : biggest_right;
else if(node->value < biggest_right)
return biggest_right;
else if(node->value < biggest_left)
return biggest_left;
else
return node->value;
}

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