Size of Binary search tree

-

 The size of BST is:

(size of left subtree)+1(root)+(size of right subtree)

(size of left sub-subtree)+1(left-sub-root)+(size of right sub-tree) + 1(root) + (size of left sub-subtree)+1(right-sub-root)+(size of right sub-tree)

int getSize(Node* root)
{
    if(root==0)
    return 0;
    else 
    return getSize(root->left)+getSize(root->right)+1;
}


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