using System;

public class Program

{

    public static void Main()

    {

        byte[] data = new byte[100];

        //F1-FF-FF-FF 0 FF-FF-FF-7F

        // WRITE:

        var p = WriteInt(data, 0, int.MaxValue);

        p = WriteInt(data, p, int.MaxValue);

        //p = WriteInt(data, p, int.MaxValue);

        string s = "Hallo";

        string s2 = "Was geht ab bei dir"; 

        p = WriteString(data, p, s);

        p = WriteString(data, p, s2);

        //x = WriteInt(data, x, 1990);

        for(int i = 0; i < data.Length; i++)

        {

            Console.Write(data[i].ToString("X"));

            var mod = i % 1;

            if(mod == 0) 

                Console.Write(" ");

        }

        Console.WriteLine("");

        var ret = ReadInt(data,0);

        var ret1 = ReadInt(data,4);

        //var ret2 = ReadInt(data,8);

        Console.WriteLine(ret);

        Console.WriteLine(ret1);

        //Console.WriteLine(ret2);

        var read = ReadString(data, 5, s.Length);

        //var read1 = ReadString(data, p+5, s2.Length);

        //var ret3 = ReadInt(data, p+5 + s2.Length);

        Console.WriteLine(read);

        //Console.WriteLine(read1);

        //Console.WriteLine(ret3);

    }

    static int WriteInt(byte[] dest, int pointer, int val)

    {

        dest[pointer]   = (byte)  val;

        dest[pointer+1] = (byte) (val >> 8);

        dest[pointer+2] = (byte) (val >> 0x10);

        dest[pointer+3] = (byte) (val >> 0x18);

​

        return (pointer + 4);

    }

    static int WriteString(byte[] dest, int pointer, string val)

    {

        var tmp = System.Text.Encoding.ASCII.GetBytes(val);

        for(int i = 0; i < tmp.Length; i ++)

        {

            dest[pointer + i] = tmp[i];

        }

        return (pointer + tmp.Length)+1;

    }

    static int ReadInt(byte[] dest, int pointer)

    {

        return (int)(dest[pointer+3] << 0x18 | 

                     dest[pointer+2] << 0x10 | 

                     dest[pointer+1] << 8 |  

                     dest[pointer]); 

    }

​

    static string ReadString(byte[] dest, int pointer, int length)

    {

        int le = 0;

        for(int i = 0 ; i < dest.Length; i ++)

        {

            if(dest[i] == 0)

            {

                le = i+1;

                break;

            }

        }

        return System.Text.Encoding.ASCII.GetString(dest, pointer, le);

    }

}