Question

How to count of digits after the comma of a double number in C#

Answer 1

using System;

public class Program
{
    static int count_digits_after_comma(double d) {
        string dstr = d.ToString();

        return dstr.Length - dstr.IndexOf(".") - 1;
    }
    
    public static void Main()
    {
        double d = 9812347.9085;

        Console.Write(count_digits_after_comma(d));
    }
}



/*
run:

4

*/

 

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