While writing prinf("hello\n") what this \n do.even if I don't use it then also program runs

Answer 1

I am not sure, but I think it is line break?

Answer 2

Yes, it prints a new line.

Do this:

printf("hello")
printf("hello")

And you will see that it doesn't print the second "hello" in a new line.

Answer 3

\n prints statement on the next line.