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This example covers two programs in dart.

- the first program finds the count of a number of digits in an integer number

The length of a number is to find the count of the number of digits.

For example, 129 number digits count is 3.

- The second program finds the count of a decimal of a double number For example, 129.1234 number, decimal digit count is 4.

Consequently, Both are used to implement digit count for a given number.

This program calculates the count of digits in a given number

- First, the number is converted to String using the toString() method.
- Find the length of a string using the length method
- Another way is using interpolation string with length method

Here is a program to find the number of digits counted in a given number

```
void main() {
int number = 129;
print(number.toString().length); //3
print('$number'.length); //3
}
```

When you run the above program, the Output is

```
3
3
```

This program counts the number of decimal digits in a given double number

- Double number is created with decimal places
- Convert, this number to String using the toString() method
- Next, Split the number using a dot(
`.`

) delimeter - Returns the decimals number as a string
- Find the length of a string
Following is an
**example for a function to count the number of decimal digits of a double number**

```
void main() {
double doubleNumber = 3.1435;
var decimalsCount = doubleNumber.toString().split('.')[1];
print(decimalsCount.length);
}
```

Output is

```
4
```

Learn how to calculate digit count in a given integer number in the dart program, Also find the fractional or decimal digits count in a double number.

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