Driver program to test above function
int main ( ) { struct node * root = newNode ( 8 ) ; root -> left = newNode ( 4 ) ; root -> right = newNode ( 12 ) ; root -> left -> left = newNode ( 2 ) ; root -> left -> right = newNode ( 6 ) ; root -> right -> left = newNode ( 10 ) ; root -> right -> right = newNode ( 14 ) ; for ( int i = 0 ; i < 16 ; i ++ ) printf ( " % d ▁ % d STRNEWLINE " , i , Ceil ( root , i ) ) ; return 0 ; }