Iterator basic question please help

Question

what is V1 .begin() means and what is its value .I tried to print it but gives error.and if I print *(v1.begin())it will print the value of first element of vector.Why I can't treat it as pointer?
https://code.sololearn.com/cZQAicu9LRYV/?ref=app

Answer 1

https://www.geeksforgeeks.org/introduction-iterators-c/
https://www.geeksforgeeks.org/iterators-c-stl/

Answer 2

You need to take look at you first cout statement.

Answer 3

I correct that one