using System;

using System.Linq;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("A: "+RedondeoNatural(1.795m, 2));

        Console.WriteLine("B: "+Math.Round(1.785m, 2));

        Console.WriteLine("B: "+RedondeoNatural(1.785m, 2));

        Console.WriteLine("C: "+RedondeoNatural(1.775m, 2));

        Console.WriteLine("D: "+RedondeoNatural(1.765m, 2));

        Console.WriteLine("E: "+RedondeoNatural(1.755m, 2));

        Console.WriteLine("R: "+RedondeoNatural(1.745m, 2));

        Console.WriteLine("\nG: "+RedondeoNatural(1.716m, 2));

        Console.WriteLine("H: "+RedondeoNatural(1.725m, 2));

        Console.WriteLine("J: "+RedondeoNatural(1.735m, 2));

        Console.WriteLine("K: "+RedondeoNatural(1.745m, 2));

        Console.WriteLine("L: "+RedondeoNatural(1.755m, 2));

        Console.WriteLine("\nM: "+RedondeoNatural(1.796m, 2));

        Console.WriteLine("Ñ: "+RedondeoNatural(1.787m, 2));

        Console.WriteLine("T: "+RedondeoNatural(1.778m, 2));

        Console.WriteLine("U: "+RedondeoNatural(1.769m, 2));

        Console.WriteLine("V: "+RedondeoNatural(1.757m, 2));

        Console.WriteLine("W: "+RedondeoNatural(1.746m, 2));

        Console.WriteLine("\nX: "+RedondeoNatural(1.714m, 2));

        Console.WriteLine("Y: "+RedondeoNatural(1.723m, 2));

        Console.WriteLine("Z: "+RedondeoNatural(1.732m, 2));

        Console.WriteLine("AA: "+RedondeoNatural(1.741m, 2));

        Console.WriteLine("AB: "+RedondeoNatural(1.753m, 2));

    }

​

    public static decimal RedondeoNatural(decimal numero, int decimales)

    {

        int factor = (int)Math.Pow(10, decimales);

        int posicion = (int)(numero * (factor * 10)) % 10;

        // Comparamos la posición del dígito si es mayor a 5

        if (posicion >= 5)

        {

            // Aplicamos redondeo especial

            return Math.Ceiling(numero * (decimal)Math.Pow(10, decimales)) / (decimal)Math.Pow(10, decimales);

        }

        else

            return Math.Round(numero, decimales);

    }

}