How to limit the number of input characters in ReadLine()?

Question

Command line

There is a variable N, in which an integer number not exceeding 10000 is entered.
How can you limit the number of characters entered by the user to 5 without using if and loops?

Answer 1

It is possible through cycles and ReadKey.
But it's better to just let anything drive, and then validate and parse

Answer 2

Under the circumstances, I suspect not. ReadLine simply reads the entire line from the buffer, it has no additional parameters for limiting.
And so the statement of the problem itself implies a cycle and a length check on each cycle.

Answer 3

No, it's impossible!
ps
You need to use another input function or process the received data.