text: One by one print successors
code: while ( ptr != NULL ) { printf ( " % d ▁ " , ptr -> info ) ; ptr = inorderSuccessor ( ptr ) ; } } struct Node * inPred ( struct Node * ptr ) { if ( ptr -> lthread == true ) return ptr -> left ; ptr = ptr -> left ; while ( ptr -> rthread == false ) ptr = ptr -> right ; return ptr ; }