Answer Posted / hithere

int depth(treenode *p)
{
if(p==NULL)return -1 ;
int h1=depth(p->left);
int h2=depth(p->right);
return(max(h1,h2)+1);
}

in case where p has no child but is not NULL itself, it
should return 0.

How can you relate the function with the structure? Explain with an appropriate example.

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