How can I get a count of the total number of digits in a number?

Question

How can I get a count of the total number of digits of a number in C#? For example, the number 887979789 has 9 digits.

Answer 1

Using recursion (sometimes asked on interviews)

public int CountDigits(int number)
{
    // In case of negative numbers
    number = Math.Abs(number);

    if (number >= 10)
        return CountDigits(number / 10) + 1;
    return 1;
 }