Deletion in BST

#1

in the code line:

if ( data < root->left ){
root->left = deleteinBST ( root->left,data );
return root;
}
why are we returning root, doesn’t it get automatically updated since it’s an address.

#2

are maanlo root ke left vala hi delete ho raha hai so tree tut gaya no toh left pointer ko kuch toh return karna padhega na aise socho