I can't get this code, please help!

Question

I can't understand how this code works and why is the input is 42 the output is 2, if you can give me any help I'll be grateful

n = int(input())

length = 0

while n > 0:
n //= 10
length += 1

print(length)

Answer 1

n = 42
42>0 true
n//=10 => 42//10=4
length+=1 => length=1

n = 4
4>0 true
n//=10 => 4//10=0
length+=1 => length=2

n=0
0>0 flase

print(length) =>output : 2

It about finding number of digits in a number
hope it helps..

Answer 2

Hello Néstor Velandia

while 42 > 0 -> True
42 // 10 = 4
length = 1

while 4 > 0 -> True
4 // 10 = 0
length = 2

while 0 > 0 -> False

In general this code counts the number of digits.
42 -> 2 digits -> length = 2
312 -> 3 digits -> length = 3