diff --git a/20240131_doga_B/ConsoleApp1/.vs/ConsoleApp1/FileContentIndex/09af9cb4-9bf9-42e8-840e-98b97723fa27.vsidx b/20240131_doga_B/ConsoleApp1/.vs/ConsoleApp1/FileContentIndex/09af9cb4-9bf9-42e8-840e-98b97723fa27.vsidx
new file mode 100644
index 0000000..38451e4
Binary files /dev/null and b/20240131_doga_B/ConsoleApp1/.vs/ConsoleApp1/FileContentIndex/09af9cb4-9bf9-42e8-840e-98b97723fa27.vsidx differ
diff --git a/20240131_doga_B/ConsoleApp1/.vs/ConsoleApp1/v17/.suo b/20240131_doga_B/ConsoleApp1/.vs/ConsoleApp1/v17/.suo
new file mode 100644
index 0000000..4edd7da
Binary files /dev/null and b/20240131_doga_B/ConsoleApp1/.vs/ConsoleApp1/v17/.suo differ
diff --git a/20240131_doga_B/ConsoleApp1/Program.cs b/20240131_doga_B/ConsoleApp1/Program.cs
index f5360dd..8c48125 100644
--- a/20240131_doga_B/ConsoleApp1/Program.cs
+++ b/20240131_doga_B/ConsoleApp1/Program.cs
@@ -4,6 +4,8 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using System.IO;
+using System.Xml.Schema;
+using System.Runtime.InteropServices.ComTypes;
 namespace ConsoleApp1
 {
     public class Uzenet
@@ -19,19 +21,124 @@ namespace ConsoleApp1
             this.nev = nev;
         }
     }
+
+    public static class Data
+    {
+        public static List<Uzenet> adatok = new List<Uzenet>();
+        public static List<string> soforok = new List<string>();
+        public static List<int> adas_soforok = new List<int>();
+    }
     class Program
     {
-        public static int Feladat3(List<Uzenet> adatok)
+        public static int Feladat3()
         {
-            return adatok.Count;
+            return Data.adatok.Count;
         }
-        public static int Feladat4(List<Uzenet> adatok)
+        public static bool Feladat4()
         {
-            return adatok.Count;
+            foreach (var item in Data.adatok)
+            {
+                if (item.adasdb == 4)
+                {
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        public static void Feladat5()
+        {
+            Console.Write("5. feladat: Kérek egy nevet: ");
+            string name = Console.ReadLine();
+            int cntr = 0;
+            foreach (var item in Data.adatok)
+            {
+                if (item.nev == name)
+                {
+                    cntr += item.adasdb;
+                }
+            }
+
+            if (cntr != 0)
+            {
+                Console.WriteLine($"\t{name} {cntr}x használta a CB-rádiót.");
+            }
+            else
+            {
+                Console.WriteLine("\tNincs ilyen nevű sofőr.");
+            }
+
+        }
+
+        public static int AtszamolPercre(int ora, int perc)
+        {
+            return ora * 60 + perc;
+        }
+
+        public static void Feladat7()
+        {
+            FileStream fileStream = new FileStream("cb2.txt", FileMode.Create, FileAccess.Write);
+            StreamWriter streamWriter = new StreamWriter(fileStream);
+
+            streamWriter.WriteLine("Kezdes;Nev;AdasDb");
+            foreach (var item in Data.adatok)
+            {
+                streamWriter.WriteLine($"{AtszamolPercre(item.ora, item.perc)};{item.nev};{item.adasdb}");
+            }
+
+            streamWriter.Close();
+            fileStream.Close();
+        }
+
+
+        public static void Soforok()
+        {
+            foreach (var item in Data.adatok)
+            {
+                if (!Data.soforok.Contains(item.nev))
+                {
+                    Data.soforok.Add(item.nev);
+                }
+            }
+        }
+        public static int Feladat8()
+        {
+            return Data.soforok.Count;
+        }
+
+        public static void Adas_soforok()
+        {
+            foreach (var sofor in Data.soforok)
+            {
+                int cntr = 0;
+                foreach (var uzenet in Data.adatok)
+                {
+                    if (sofor == uzenet.nev)
+                    {
+                        cntr += uzenet.adasdb;
+                    }
+                }
+                Data.adas_soforok.Add(cntr);
+            }
+        }
+        public static void Feladat9()
+        {
+            Console.WriteLine("9. feladat: Legtöbb adást indító sofőr");
+            int ind = 0;
+            for (int i = 1; i < Data.adas_soforok.Count; i++)
+            {
+                if (Data.adas_soforok[i] > Data.adas_soforok[ind])
+                {
+                    ind = i;
+                }
+            }
+
+            Console.WriteLine($"\tNév: {Data.soforok[ind]}");
+            Console.WriteLine($"\tAdások száma: {Data.adas_soforok[ind]}");
         }
         static void Main(string[] args)
         {
-            List<Uzenet> adatok = new List<Uzenet>();
+            Data.adatok.Clear();
 
             FileStream fileStream = new FileStream("cb.txt", FileMode.Open, FileAccess.Read);
             StreamReader streamReader = new StreamReader(fileStream);
@@ -46,12 +153,26 @@ namespace ConsoleApp1
             {
                 string[] sor = data[i].Split(';');
                 Uzenet uzi = new Uzenet(int.Parse(sor[0]), int.Parse(sor[1]), int.Parse(sor[2]), sor[3]);
-                adatok.Add(uzi);
+                Data.adatok.Add(uzi);
             }
 
-            Console.WriteLine($"3. feladat: Bejegyzések száma: {Feladat3(adatok)}");
-
+            Console.WriteLine($"3. feladat: Bejegyzések száma: {Feladat3()}");
+            if (Feladat4())
+            {
+                Console.WriteLine($"4. feladat: Volt négy adást indító sofőr.");
+            }
+            else
+            {
+                Console.WriteLine($"4. feladat: Nem volt négy adást indító sofőr.");
+            }
+
+            Feladat5();
 
+            Feladat7();
+            Soforok();
+            Console.WriteLine($"8. feladat: Sofőrök száma: {Feladat8()} fő");
+            Adas_soforok();
+            Feladat9();
         }
     }
 }
diff --git a/20240131_doga_B/ConsoleApp1/bin/Debug/ConsoleApp1.exe b/20240131_doga_B/ConsoleApp1/bin/Debug/ConsoleApp1.exe
index 4ce9a5c..caa7416 100644
Binary files a/20240131_doga_B/ConsoleApp1/bin/Debug/ConsoleApp1.exe and b/20240131_doga_B/ConsoleApp1/bin/Debug/ConsoleApp1.exe differ
diff --git a/20240131_doga_B/ConsoleApp1/bin/Debug/ConsoleApp1.pdb b/20240131_doga_B/ConsoleApp1/bin/Debug/ConsoleApp1.pdb
index ae95052..abeb897 100644
Binary files a/20240131_doga_B/ConsoleApp1/bin/Debug/ConsoleApp1.pdb and b/20240131_doga_B/ConsoleApp1/bin/Debug/ConsoleApp1.pdb differ
diff --git a/20240131_doga_B/ConsoleApp1/cb2.txt b/20240131_doga_B/ConsoleApp1/cb2.txt
new file mode 100644
index 0000000..bf24397
--- /dev/null
+++ b/20240131_doga_B/ConsoleApp1/cb2.txt
@@ -0,0 +1,382 @@
+Kezdes;Nev;AdasDb
+360;Laci;2
+361;Bandi;3
+361;Gyuri;2
+363;Tomi;4
+367;Bandi;2
+367;Zsombor;1
+368;Peti;1
+368;Józsi;4
+368;Csabi;1
+370;Sanyi;3
+371;Zoli;1
+371;Józsi;2
+373;Jani;1
+377;Bandi;1
+380;Bandi;2
+380;Laci;2
+381;Pityu;1
+385;Bandi;1
+387;Gabi;1
+390;Józsi;2
+392;Pityu;2
+392;Gabi;2
+393;Tomi;2
+395;Sanyi;1
+395;Tibi;3
+396;Zsombor;1
+398;Józsi;3
+398;Tibi;1
+400;Jani;1
+402;Peti;3
+402;Józsi;4
+403;Zsombor;1
+406;Imi;3
+407;Bandi;4
+408;Gyuri;3
+409;Peti;4
+410;Józsi;1
+411;Bandi;1
+413;Imi;3
+415;Peti;2
+418;Csabi;1
+421;Feri;2
+421;Lali;1
+424;Feri;3
+425;Gabi;4
+426;Jani;2
+427;Tomi;3
+427;Bandi;4
+430;Imi;1
+430;Zoli;1
+430;Csabi;3
+432;Bandi;3
+436;Gabi;1
+436;Feri;1
+439;Jani;2
+439;Józsi;2
+440;Gyuri;2
+440;Józsi;3
+442;Bandi;3
+443;Zoli;1
+444;Gabi;3
+445;Zoli;4
+447;Laci;2
+448;Tibi;1
+452;Zsolti;1
+453;Peti;3
+454;Zsombor;1
+456;Zsombor;4
+457;Pityu;3
+457;Zoli;1
+458;Zsolti;4
+458;Laci;2
+459;Pityu;4
+459;Gyuri;2
+460;Bandi;1
+460;Laci;3
+463;Gabi;4
+465;Gyuri;4
+467;Józsi;1
+468;Feri;1
+468;Bandi;1
+469;Tomi;1
+470;Peti;2
+470;Csabi;1
+470;Gyuri;3
+472;Zsolti;4
+473;Sanyi;1
+475;Jani;4
+476;Peti;2
+476;Tomi;2
+476;Tibi;4
+478;Sanyi;1
+478;Tomi;3
+484;Sanyi;3
+484;Jani;4
+484;Zsombor;4
+484;Lali;3
+486;Gyuszi;2
+486;Gyuszi;1
+486;Tibi;1
+489;Bandi;4
+489;Pityu;2
+489;Sanyi;3
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+492;Tomi;1
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+499;Józsi;3
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+505;Imi;1
+507;Imi;1
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+513;Sanyi;1
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+513;Laci;3
+514;Józsi;3
+519;Gyuri;2
+523;Tomi;1
+524;Zoli;3
+524;Csabi;2
+525;Zoli;3
+526;Bandi;1
+526;Gabi;3
+527;Imi;3
+528;Zsolti;3
+530;Józsi;2
+530;Bandi;4
+534;Zsolti;4
+543;Bandi;1
+544;Bandi;2
+545;Lali;3
+546;Feri;2
+546;Józsi;1
+546;Zsombor;1
+547;Lali;4
+550;Zoli;3
+551;Gyuri;4
+551;Imi;3
+553;Imi;2
+556;Zsombor;2
+557;Józsi;1
+560;Peti;2
+561;Laci;1
+562;Gyuri;3
+567;Feri;3
+568;Lali;1
+568;Feri;4
+569;Gabi;1
+570;Zoli;2
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+574;Gabi;1
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diff --git a/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.AssemblyReference.cache b/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.AssemblyReference.cache
index f5e894a..126ed02 100644
Binary files a/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.AssemblyReference.cache and b/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.AssemblyReference.cache differ
diff --git a/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.CoreCompileInputs.cache b/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.CoreCompileInputs.cache
index ee191d7..7be682f 100644
--- a/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.CoreCompileInputs.cache
+++ b/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.CoreCompileInputs.cache
@@ -1 +1 @@
-7f4b213b428f4c013f19137338418ee1f5525793
+5bb56c9ef8259863da41b9966ff000324a4ac45ce033dd510671b53b9ecdc07a
diff --git a/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.FileListAbsolute.txt b/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.FileListAbsolute.txt
index e124ac7..341476c 100644
--- a/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.FileListAbsolute.txt
+++ b/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.FileListAbsolute.txt
@@ -1,7 +1,14 @@
-C:\Users\szabomarton\Desktop\C#\ProgaOra\20240131_doga_B\ConsoleApp1\bin\Debug\ConsoleApp1.exe.config
-C:\Users\szabomarton\Desktop\C#\ProgaOra\20240131_doga_B\ConsoleApp1\bin\Debug\ConsoleApp1.exe
-C:\Users\szabomarton\Desktop\C#\ProgaOra\20240131_doga_B\ConsoleApp1\bin\Debug\ConsoleApp1.pdb
-C:\Users\szabomarton\Desktop\C#\ProgaOra\20240131_doga_B\ConsoleApp1\obj\Debug\ConsoleApp1.csproj.AssemblyReference.cache
-C:\Users\szabomarton\Desktop\C#\ProgaOra\20240131_doga_B\ConsoleApp1\obj\Debug\ConsoleApp1.csproj.CoreCompileInputs.cache
-C:\Users\szabomarton\Desktop\C#\ProgaOra\20240131_doga_B\ConsoleApp1\obj\Debug\ConsoleApp1.exe
-C:\Users\szabomarton\Desktop\C#\ProgaOra\20240131_doga_B\ConsoleApp1\obj\Debug\ConsoleApp1.pdb
+C:\Users\szabomarton\Desktop\C#\ProgaOra\20240131_doga_B\ConsoleApp1\bin\Debug\ConsoleApp1.exe.config
+C:\Users\szabomarton\Desktop\C#\ProgaOra\20240131_doga_B\ConsoleApp1\bin\Debug\ConsoleApp1.exe
+C:\Users\szabomarton\Desktop\C#\ProgaOra\20240131_doga_B\ConsoleApp1\bin\Debug\ConsoleApp1.pdb
+C:\Users\szabomarton\Desktop\C#\ProgaOra\20240131_doga_B\ConsoleApp1\obj\Debug\ConsoleApp1.csproj.AssemblyReference.cache
+C:\Users\szabomarton\Desktop\C#\ProgaOra\20240131_doga_B\ConsoleApp1\obj\Debug\ConsoleApp1.csproj.CoreCompileInputs.cache
+C:\Users\szabomarton\Desktop\C#\ProgaOra\20240131_doga_B\ConsoleApp1\obj\Debug\ConsoleApp1.exe
+C:\Users\szabomarton\Desktop\C#\ProgaOra\20240131_doga_B\ConsoleApp1\obj\Debug\ConsoleApp1.pdb
+E:\Házi\Programozás\C#\Suli\ProgaOra\20240131_doga_B\ConsoleApp1\bin\Debug\ConsoleApp1.exe.config
+E:\Házi\Programozás\C#\Suli\ProgaOra\20240131_doga_B\ConsoleApp1\bin\Debug\ConsoleApp1.exe
+E:\Házi\Programozás\C#\Suli\ProgaOra\20240131_doga_B\ConsoleApp1\bin\Debug\ConsoleApp1.pdb
+E:\Házi\Programozás\C#\Suli\ProgaOra\20240131_doga_B\ConsoleApp1\obj\Debug\ConsoleApp1.csproj.AssemblyReference.cache
+E:\Házi\Programozás\C#\Suli\ProgaOra\20240131_doga_B\ConsoleApp1\obj\Debug\ConsoleApp1.csproj.CoreCompileInputs.cache
+E:\Házi\Programozás\C#\Suli\ProgaOra\20240131_doga_B\ConsoleApp1\obj\Debug\ConsoleApp1.exe
+E:\Házi\Programozás\C#\Suli\ProgaOra\20240131_doga_B\ConsoleApp1\obj\Debug\ConsoleApp1.pdb
diff --git a/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.exe b/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.exe
index 4ce9a5c..caa7416 100644
Binary files a/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.exe and b/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.exe differ
diff --git a/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.pdb b/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.pdb
index ae95052..abeb897 100644
Binary files a/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.pdb and b/20240131_doga_B/ConsoleApp1/obj/Debug/ConsoleApp1.pdb differ
diff --git a/20240131_doga_B/ConsoleApp1/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache b/20240131_doga_B/ConsoleApp1/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache
index 52a107a..cf4e661 100644
Binary files a/20240131_doga_B/ConsoleApp1/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache and b/20240131_doga_B/ConsoleApp1/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache differ