using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var run = countDigits("-1000.12");

    }

    static bool countDigits(string number)

{

    List<char> digits = new List<char>();

    bool run = true;

    if (number == "q")

    {

        run = false;

    }

    else if (int.TryParse(number, out int value)) // if the input is an intiger

    {

        if (value < 0)

            value = value * (-1);

​

        number = value.ToString();

        digits.AddRange(number);

        Console.WriteLine("Number of all digits in integer: " + digits.Count);

        digits = digits.Distinct().ToList();  //getting rid of duplicates

        Console.WriteLine("Number of digits but duplicates doesn't count: " + digits.Count);

        digits.Clear();

    }

    else if (IsFloat(number))

    {

        float.TryParse(number, out float value2);

        if (value2 < 0)

            value2 = value2 * (-1);

​

        number = value2.ToString();

        digits.AddRange(number);

        Console.WriteLine("Number of all digits in float: " + (digits.Count - 1));

        digits = digits.Distinct().ToList();  //getting rid of duplicates

        Console.WriteLine("Number of digits but duplicates doesn't count: " + (digits.Count - 1));

        digits.Clear();

    }

    else

    {

        Console.Clear();

        Console.WriteLine("The input must be an intiger");

    }

    Console.WriteLine();

​

    return run;

}

​

static bool IsFloat(string number)

{

    float floatnumber;

    return float.TryParse(number, out floatnumber);

}

}