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new file mode 100644
index 0000000..c9e560a
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diff --git a/20250115/ConsoleApp1/.vs/ConsoleApp1/v17/.suo b/20250115/ConsoleApp1/.vs/ConsoleApp1/v17/.suo
new file mode 100644
index 0000000..73c40ed
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diff --git a/20250115/ConsoleApp1/.vs/ConsoleApp1/v17/DocumentLayout.backup.json b/20250115/ConsoleApp1/.vs/ConsoleApp1/v17/DocumentLayout.backup.json
new file mode 100644
index 0000000..80c30ef
--- /dev/null
+++ b/20250115/ConsoleApp1/.vs/ConsoleApp1/v17/DocumentLayout.backup.json
@@ -0,0 +1,37 @@
+{
+  "Version": 1,
+  "WorkspaceRootPath": "C:\\Users\\szabomarton\\Desktop\\ProgaOra\\20250115\\ConsoleApp1\\",
+  "Documents": [
+    {
+      "AbsoluteMoniker": "D:0:0:{1253C52B-9EE2-419E-8ACF-C9DB566348E9}|ConsoleApp1\\ConsoleApp1.csproj|c:\\users\\szabomarton\\desktop\\progaora\\20250115\\consoleapp1\\consoleapp1\\program.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}",
+      "RelativeMoniker": "D:0:0:{1253C52B-9EE2-419E-8ACF-C9DB566348E9}|ConsoleApp1\\ConsoleApp1.csproj|solutionrelative:consoleapp1\\program.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}"
+    }
+  ],
+  "DocumentGroupContainers": [
+    {
+      "Orientation": 0,
+      "VerticalTabListWidth": 256,
+      "DocumentGroups": [
+        {
+          "DockedWidth": 200,
+          "SelectedChildIndex": 0,
+          "Children": [
+            {
+              "$type": "Document",
+              "DocumentIndex": 0,
+              "Title": "Program.cs",
+              "DocumentMoniker": "C:\\Users\\szabomarton\\Desktop\\ProgaOra\\20250115\\ConsoleApp1\\ConsoleApp1\\Program.cs",
+              "RelativeDocumentMoniker": "ConsoleApp1\\Program.cs",
+              "ToolTip": "C:\\Users\\szabomarton\\Desktop\\ProgaOra\\20250115\\ConsoleApp1\\ConsoleApp1\\Program.cs",
+              "RelativeToolTip": "ConsoleApp1\\Program.cs",
+              "ViewState": "AgIAAIcAAAAAAAAAAAAuwKIAAAAFAAAAAAAAAA==",
+              "Icon": "ae27a6b0-e345-4288-96df-5eaf394ee369.000738|",
+              "WhenOpened": "2025-01-15T11:04:49.38Z",
+              "EditorCaption": ""
+            }
+          ]
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/20250115/ConsoleApp1/.vs/ConsoleApp1/v17/DocumentLayout.json b/20250115/ConsoleApp1/.vs/ConsoleApp1/v17/DocumentLayout.json
new file mode 100644
index 0000000..9cf4be5
--- /dev/null
+++ b/20250115/ConsoleApp1/.vs/ConsoleApp1/v17/DocumentLayout.json
@@ -0,0 +1,37 @@
+{
+  "Version": 1,
+  "WorkspaceRootPath": "C:\\Users\\szabomarton\\Desktop\\ProgaOra\\20250115\\ConsoleApp1\\",
+  "Documents": [
+    {
+      "AbsoluteMoniker": "D:0:0:{1253C52B-9EE2-419E-8ACF-C9DB566348E9}|ConsoleApp1\\ConsoleApp1.csproj|c:\\users\\szabomarton\\desktop\\progaora\\20250115\\consoleapp1\\consoleapp1\\program.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}",
+      "RelativeMoniker": "D:0:0:{1253C52B-9EE2-419E-8ACF-C9DB566348E9}|ConsoleApp1\\ConsoleApp1.csproj|solutionrelative:consoleapp1\\program.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}"
+    }
+  ],
+  "DocumentGroupContainers": [
+    {
+      "Orientation": 0,
+      "VerticalTabListWidth": 256,
+      "DocumentGroups": [
+        {
+          "DockedWidth": 200,
+          "SelectedChildIndex": 0,
+          "Children": [
+            {
+              "$type": "Document",
+              "DocumentIndex": 0,
+              "Title": "Program.cs",
+              "DocumentMoniker": "C:\\Users\\szabomarton\\Desktop\\ProgaOra\\20250115\\ConsoleApp1\\ConsoleApp1\\Program.cs",
+              "RelativeDocumentMoniker": "ConsoleApp1\\Program.cs",
+              "ToolTip": "C:\\Users\\szabomarton\\Desktop\\ProgaOra\\20250115\\ConsoleApp1\\ConsoleApp1\\Program.cs",
+              "RelativeToolTip": "ConsoleApp1\\Program.cs",
+              "ViewState": "AgIAAJ4AAAAAAAAAAAAowLIAAAAMAAAAAAAAAA==",
+              "Icon": "ae27a6b0-e345-4288-96df-5eaf394ee369.000738|",
+              "WhenOpened": "2025-01-15T11:04:49.38Z",
+              "EditorCaption": ""
+            }
+          ]
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/20250115/ConsoleApp1/ConsoleApp1.sln b/20250115/ConsoleApp1/ConsoleApp1.sln
new file mode 100644
index 0000000..c6e151b
--- /dev/null
+++ b/20250115/ConsoleApp1/ConsoleApp1.sln
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.11.35222.181
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConsoleApp1", "ConsoleApp1\ConsoleApp1.csproj", "{1253C52B-9EE2-419E-8ACF-C9DB566348E9}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{1253C52B-9EE2-419E-8ACF-C9DB566348E9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1253C52B-9EE2-419E-8ACF-C9DB566348E9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1253C52B-9EE2-419E-8ACF-C9DB566348E9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1253C52B-9EE2-419E-8ACF-C9DB566348E9}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {5A66E34C-F969-4135-ADD8-93ABDBB4CB3A}
+	EndGlobalSection
+EndGlobal
diff --git a/20250115/ConsoleApp1/ConsoleApp1/App.config b/20250115/ConsoleApp1/ConsoleApp1/App.config
new file mode 100644
index 0000000..56efbc7
--- /dev/null
+++ b/20250115/ConsoleApp1/ConsoleApp1/App.config
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
+    </startup>
+</configuration>
\ No newline at end of file
diff --git a/20250115/ConsoleApp1/ConsoleApp1/ConsoleApp1.csproj b/20250115/ConsoleApp1/ConsoleApp1/ConsoleApp1.csproj
new file mode 100644
index 0000000..8c44f60
--- /dev/null
+++ b/20250115/ConsoleApp1/ConsoleApp1/ConsoleApp1.csproj
@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{1253C52B-9EE2-419E-8ACF-C9DB566348E9}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <RootNamespace>ConsoleApp1</RootNamespace>
+    <AssemblyName>ConsoleApp1</AssemblyName>
+    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+    <Deterministic>true</Deterministic>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Program.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="App.config" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+</Project>
\ No newline at end of file
diff --git a/20250115/ConsoleApp1/ConsoleApp1/Program.cs b/20250115/ConsoleApp1/ConsoleApp1/Program.cs
new file mode 100644
index 0000000..57af16c
--- /dev/null
+++ b/20250115/ConsoleApp1/ConsoleApp1/Program.cs
@@ -0,0 +1,232 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Diagnostics.Contracts;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml;
+
+namespace ConsoleApp1
+{
+    public class ListaElem<T>
+    {
+        public ListaElem<T> Next { get; set; }
+        public T Value { get; set; }
+    }
+
+    public class SajatLancoltLista<T>: IEnumerable<T>
+    {
+        public ListaElem<T> Start { get; private set; }
+        public ListaElem<T> End { get; private set; }
+
+        public void Add(T value)
+        {
+            var next = new ListaElem<T> { Value = value };
+
+            if (Start == null)
+            {
+                Start = next;
+                End = next;
+            } else
+            {
+                End.Next = next;
+                End = next;
+            }
+        }
+
+        private bool Equals(T value, T other)
+        {
+            if (ReferenceEquals(value, other))
+            {
+                return true;
+            } else
+            {
+                return value.Equals(other);
+            }
+
+        }
+
+        public bool Remove(T value)
+        {
+            ListaElem<T> previous = null;
+            ListaElem<T> current = Start;
+
+            while (current != null)
+            {
+                if (Equals(current.Value, value))
+                {
+                    if (previous != null)
+                    {
+                        previous.Next = current.Next;
+                        if (current.Next == null)
+                        {
+                            End = previous;
+                        }
+                    }
+                    else
+                    {
+                        Start = Start.Next;
+                        if (Start == null)
+                        {
+                            End = null;
+                        }
+                    }
+                    return true;
+                }
+                previous = current;
+                current = current.Next;
+            }
+
+            return false;
+        }
+
+
+        public bool Contains(T value)
+        {
+            var current = Start;
+
+            while (current != null)
+            {
+                if (Equals(current.Value, value))
+                {
+                    return true;
+                }
+                current = current.Next;
+            }
+            return false;
+        }
+
+        public IEnumerator<T> GetEnumerator()
+        {
+            var current = Start;
+
+            while (current != null)
+            {
+                var retval = current.Value;
+                current = current.Next;
+                yield return retval;
+            }
+        }
+
+        IEnumerator IEnumerable.GetEnumerator()
+        {
+            return GetEnumerator();
+        }
+    }
+
+    public class SajatVerem<T> : IEnumerable<T>
+    {
+        private List<T> _lista;
+
+        public SajatVerem()
+        {
+            _lista = new List<T>();
+        }
+
+        public void Push(T value)
+        {
+            _lista.Add(value);
+        }
+
+        int Count
+        {
+            get { return _lista.Count; }
+        }
+
+        public T Pop()
+        {
+            int vege = _lista.Count - 1;
+            T ret = _lista[vege];
+            _lista.RemoveAt(vege);
+            return ret;
+        }
+
+        public T Peak()
+        {
+            int vege = _lista.Count - 1;
+            return _lista[vege];
+        }
+
+        public IEnumerator<T> GetEnumerator()
+        {
+            for (int i = _lista.Count - 1; i >= 0; i--)
+            {
+                yield return _lista[i];
+            }
+        }
+
+        IEnumerator IEnumerable.GetEnumerator()
+        {
+            return GetEnumerator();
+        }
+    }
+
+    public class BinarisFa<T>
+    {
+        public T Value;
+        public BinarisFa<T> Right;
+        public BinarisFa<T> Left;
+
+        public BinarisFa(T value)
+        {
+            Value = value;
+        }
+
+        public void Add(int value)
+        {
+            
+        }
+
+
+    }
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            var lancolt = new SajatLancoltLista<int>();
+
+            lancolt.Add(1);
+            lancolt.Add(2);
+            lancolt.Add(3);
+            lancolt.Add(4);
+            lancolt.Add(5);
+
+            foreach (var item in lancolt)
+            {
+                Console.WriteLine(item);
+            }
+
+            lancolt.Remove(1);
+
+            foreach (var item in lancolt)
+            {
+                Console.WriteLine(item);
+            }
+
+            var verem = new SajatVerem<int>();
+            verem.Push(11);
+            verem.Push(12);
+            verem.Push(13);
+            verem.Push(14);
+            verem.Push(15);
+
+            Console.WriteLine("A verem elemei: ");
+            foreach (var item in verem)
+            {
+                Console.WriteLine(item);
+            }
+
+            Console.WriteLine("Pop:");
+            Console.WriteLine(verem.Pop());
+
+            BinarisFa<int> binarisFa = new BinarisFa<int>(20);
+            binarisFa.Right
+
+
+            Console.ReadKey();
+        }
+
+    }
+}
diff --git a/20250115/ConsoleApp1/ConsoleApp1/Properties/AssemblyInfo.cs b/20250115/ConsoleApp1/ConsoleApp1/Properties/AssemblyInfo.cs
new file mode 100644
index 0000000..3f6bb73
--- /dev/null
+++ b/20250115/ConsoleApp1/ConsoleApp1/Properties/AssemblyInfo.cs
@@ -0,0 +1,33 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("ConsoleApp1")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("ConsoleApp1")]
+[assembly: AssemblyCopyright("Copyright ©  2025")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible
+// to COM components.  If you need to access a type in this assembly from
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("1253c52b-9ee2-419e-8acf-c9db566348e9")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version
+//      Build Number
+//      Revision
+//
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/20250115/ConsoleApp1/ConsoleApp1/bin/Debug/ConsoleApp1.exe b/20250115/ConsoleApp1/ConsoleApp1/bin/Debug/ConsoleApp1.exe
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index 0000000..ef2dae1
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diff --git a/20250115/ConsoleApp1/ConsoleApp1/bin/Debug/ConsoleApp1.exe.config b/20250115/ConsoleApp1/ConsoleApp1/bin/Debug/ConsoleApp1.exe.config
new file mode 100644
index 0000000..56efbc7
--- /dev/null
+++ b/20250115/ConsoleApp1/ConsoleApp1/bin/Debug/ConsoleApp1.exe.config
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
+    </startup>
+</configuration>
\ No newline at end of file
diff --git a/20250115/ConsoleApp1/ConsoleApp1/bin/Debug/ConsoleApp1.pdb b/20250115/ConsoleApp1/ConsoleApp1/bin/Debug/ConsoleApp1.pdb
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index 0000000..3e9ece7
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diff --git a/20250115/ConsoleApp1/ConsoleApp1/obj/Debug/.NETFramework,Version=v4.7.2.AssemblyAttributes.cs b/20250115/ConsoleApp1/ConsoleApp1/obj/Debug/.NETFramework,Version=v4.7.2.AssemblyAttributes.cs
new file mode 100644
index 0000000..3871b18
--- /dev/null
+++ b/20250115/ConsoleApp1/ConsoleApp1/obj/Debug/.NETFramework,Version=v4.7.2.AssemblyAttributes.cs
@@ -0,0 +1,4 @@
+// <autogenerated />
+using System;
+using System.Reflection;
+[assembly: global::System.Runtime.Versioning.TargetFrameworkAttribute(".NETFramework,Version=v4.7.2", FrameworkDisplayName = ".NET Framework 4.7.2")]
diff --git a/20250115/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.AssemblyReference.cache b/20250115/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.AssemblyReference.cache
new file mode 100644
index 0000000..126ed02
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diff --git a/20250115/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.CoreCompileInputs.cache b/20250115/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.CoreCompileInputs.cache
new file mode 100644
index 0000000..0be8d26
--- /dev/null
+++ b/20250115/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.CoreCompileInputs.cache
@@ -0,0 +1 @@
+137ddb1975586287657f37337b64d051167bb6a147915d9fb5b8eb94b1093509
diff --git a/20250115/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.FileListAbsolute.txt b/20250115/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.FileListAbsolute.txt
new file mode 100644
index 0000000..18a8546
--- /dev/null
+++ b/20250115/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.FileListAbsolute.txt
@@ -0,0 +1,7 @@
+C:\Users\szabomarton\Desktop\ProgaOra\20250115\ConsoleApp1\ConsoleApp1\bin\Debug\ConsoleApp1.exe.config
+C:\Users\szabomarton\Desktop\ProgaOra\20250115\ConsoleApp1\ConsoleApp1\bin\Debug\ConsoleApp1.exe
+C:\Users\szabomarton\Desktop\ProgaOra\20250115\ConsoleApp1\ConsoleApp1\bin\Debug\ConsoleApp1.pdb
+C:\Users\szabomarton\Desktop\ProgaOra\20250115\ConsoleApp1\ConsoleApp1\obj\Debug\ConsoleApp1.csproj.AssemblyReference.cache
+C:\Users\szabomarton\Desktop\ProgaOra\20250115\ConsoleApp1\ConsoleApp1\obj\Debug\ConsoleApp1.csproj.CoreCompileInputs.cache
+C:\Users\szabomarton\Desktop\ProgaOra\20250115\ConsoleApp1\ConsoleApp1\obj\Debug\ConsoleApp1.exe
+C:\Users\szabomarton\Desktop\ProgaOra\20250115\ConsoleApp1\ConsoleApp1\obj\Debug\ConsoleApp1.pdb
diff --git a/20250115/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.exe b/20250115/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.exe
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diff --git a/20250115/ConsoleApp1/ConsoleApp1/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache b/20250115/ConsoleApp1/ConsoleApp1/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache
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index 0000000..94c747e
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diff --git a/20250115/Feladatok.pdf b/20250115/Feladatok.pdf
new file mode 100644
index 0000000..42166c1
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diff --git a/20250115/linked_list.cs b/20250115/linked_list.cs
new file mode 100644
index 0000000..6bf0066
--- /dev/null
+++ b/20250115/linked_list.cs
@@ -0,0 +1,22 @@
+using System;
+using System.IO;
+using System.Collections.Generic;
+
+namespace LinkedList_Gyak
+{
+    public Class Lancoltlista{
+        public int value;
+        //public Lancoltlista *pointer;
+
+        public Lancoltlista(int value){
+            this.value = value;
+        }
+
+    }
+    internal class Program{
+        static void Main(string[] args){
+            Lancoltlista elem = new Lancoltlista(1);
+            Console.WriteLine(elem.value);
+        }
+    }
+}
\ No newline at end of file