Write a C program to find the depth or height of a tree.

Here is some C code to get the height of the three

tree_height(mynode *p)

{

   if(p==NULL)return(0);

   if(p->left){h1=tree_height(p->left);}

   if(p=>right){h2=tree_height(p->right);}

   return(max(h1,h2)+1);

} 

The degree of the leaf is zero. The degree of a tree is the max of its element degrees. A binary tree of height n, h > 0, has at least h and at most (2^h -1) elements in it. The height of a binary tree that contains n, n>0, elements is at most n and atleast log(n+1) to the base 2.
Log(n+1) to the base 2 = h
n = (2^h - 1)