## Example 1: Count Number of Digits in an Integer using while loop

```
num = 3452
count = 0
while num != 0:
num //= 10
count += 1
print("Number of digits: " + str(count))
```

**Output**

Number of digits: 4

In this program, the while loop is iterated until the test expression `num != 0`

is evaluated to 0 (false).

- After the first iteration,
`num`

will be divided by 10 and its value will be 345. Then, the`count`

is incremented to 1. - After the second iteration, the value of
`num`

will be 34 and the`count`

is incremented to 2. - After the third iteration, the value of
`num`

will be 3 and the`count`

is incremented to 3. - After the fourth iteration, the value of
`num`

will be 0 and the`count`

is incremented to 4. - Then the test expression is evaluated to false and the loop terminates.

## Example 2: Using inbuilt methods

```
num = 123456
print(len(str(num)))
```

**Output**

6

In the above example, we first convert the integer value into string by using `str()`

. Then, we find the length of the string using `len()`

.