In this program, You will learn how to find the sum of digits of a number using a function in Python.

`1234 => 1 + 2 + 3 + 4 = 10`

## Example: How to find the sum of digits of a number using a function in Python.

```
def reverse(n):
s = 0
while n > 0:
r = n % 10
s = s + r
n = int(n / 10)
return s
x = int(input("Enter a number:"))
result = reverse(x)
print("Sum of all digits:", result)
```

#### Output:

```
Enter a number:2345
Sum of all digits: 14
```