TuplaDivWriteHexa, C#

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Your code goes here
            Console.WriteLine("Hello, world!");
            Tuple<string, string> t = new Tuple<string, string>("un","dos");
            Console.WriteLine("test: " + t.Item1+"-"+t.Item2);
            /*
            for (int i = 0; i < 3; i++)
			{
                Console.WriteLine("count1: " + i);
            }
            Console.WriteLine("*********************************");

for (int ii = 0; ii < 3; ++ii)
			{
                Console.WriteLine("count2: " + ii);
            }
            */
            //var b = 16;
            int f = 5;//2.6f;
            int ff = 2;//1.2f;
            int r = f%ff;
            int m = f/ff;
            Console.WriteLine("r:" + r);
            Console.WriteLine("m:" + m);
            
            //byte b = 11111111b;
           /* var c = 2;
            c= ~b;
             Console.WriteLine("c:" + c);
            */
            byte bb = 0x28;
            Console.WriteLine("b:" + bb);
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,14 sec, absolute running time: 0,09 sec, cpu time: 0,08 sec, average memory usage: 13 Mb, average nr of threads: 3, absolute service time: 0,27 sec