text: Driver program to test above functions
code: int main ( ) { node * root = NULL ; root = insert ( root , 6 ) ; root = insert ( root , -13 ) ; root = insert ( root , 14 ) ; root = insert ( root , -8 ) ; root = insert ( root , 15 ) ; root = insert ( root , 13 ) ; root = insert ( root , 7 ) ; if ( isTripletPresent ( root ) ) printf ( " Present " ) ; else printf ( " Not ▁ Present " ) ; return 0 ; }