Bonus Score - if-else

using System;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            int num = int.Parse(Console.ReadLine());
            double bonusScore = 0.0;

            if (num > 1000)
            {
                bonusScore = num * 0.10;
            } else if (num>100 && num<=1000)
            {
                bonusScore = num * 0.20;
            } else if (num<=100)
            {
                bonusScore = 5;
            }
            if (num % 10 ==5)
            {
                bonusScore += 2;
            } else if (num % 2 == 0)
            {
                bonusScore += 1;
            }
            Console.WriteLine(bonusScore);
            Console.WriteLine(num + bonusScore);
        }
    }
}