How to use an input statement in a Linkedlist, such like insert list method?

Question

Prompt the user to input 3 elements and use input statement again to insert an element/value in an existing element

Answer 1

Yes. Apparently it is a task given by our prof. And one of the requirement is that using an input statement in a linkedlist. I myself also do not know why the heck would she include input in a linkedlist. Lol

p.s im still new in this language environment so please bear with me