why does the line changes after each condition in while loop?

Answer 1

By changing, I assume you mean...
'Why different Identifiers or Quantifiers have to be used'.

Basicslly, if you had a While Loop, the Bare Basics that you'd need inside would be
- if
and
- else

For more Complex Loops, perhaps...
- elif (Short for: Else If)
And even further...
- try:
- except:
- finally:

Those are the identifiers for certain blocks of code.

:)

Answer 2

no, I mean that the line changes as
1 and then the line changes and so on,
if I wanted to do this in any c program, I would have to use /n
but this is not the case here