Value of i in for loop

#1

in the for loop i ki value 1 se kyu start hui h?
agr user ne 0 index node ko get krna hua to for loop kaise kaam krega becuase for loop to 1 index se start hora h?

#2

yes u can start your loop from 0 and go to n-1 ,or start from 1 and go to n.it wont make a difference.We create 1 based indexing linkedlist,you can create 0 based indexing