2. (a) Write a C++ program segment to insert data in an existing linked list after specified number of node. For example, given the diagram below, suppose user enters node number 2, so we want to add a node after 2nd position. So, the new node must be in 3rd position. head data 20 next 1" node temp cate 10 2 node temp data 50 Linked list New node next data 40 3 node next NULL (14/100)