Count Number of digits in a number in C#

To count the number of digits in a number we can use Math.Floor() method and pass Math.Log10() + 1 as parameter, which returns the base 10 logarithm of a specified number + 1.

Example

using System;

public class Program
{
	public static void Main() {
		int wholeValue = 9856;
		double numberOfDigits = Math.Floor(Math.Log10(wholeValue) + 1);
		Console.WriteLine(numberOfDigits);
	}
}

Output

Conclusion

In this page (written and validated by A. Gawali) you learned about Count Number of digits in a number in C# . What's Next? If you are interested in completing C# tutorial, we encourage you simply to start here: C# Tutorial.

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