In this program, You will learn how to find the largest and smallest digit of a number in Python.

```
while <condition>:
#statement
```

## Example: How to find the largest and smallest digit of a number in Python.

```
n = int(input("Enter a number:"))
sd = 9
ld = 0
while n > 0:
r = n % 10
if sd > r:
sd = r
if ld < r:
ld = r
n = int(n / 10)
print("Largest digit:", ld)
print("Smallest digit:", sd)
```

#### Output:

```
Enter a number:3254
Largest digit: 5
Smallest digit: 2
```