using System;

public class Program

{

    static decimal total =0;

    static decimal valor1 =10;  

    static decimal valor2 =15;

    static decimal valor3 =21;

    public static void Main()

    {

        if(valor1 % 5 == 0)

        {

            total = total + valor1;     

        }

        total = total + valor2;

        total = total + valor3;

        Console.WriteLine("RESULTADO TOTAL= " + total.ToString());  

    }

​

    static void Adicionar(int valor)

    {

        total = total + valor;

    }       

}