diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 787dea9..159bc3d 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -6,10 +6,24 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - name: build using gcc
-        run: gcc -Wall -Werror main.c -o program
-      - name: Archive production artifacts
-        uses: actions/upload-artifact@v3
+      - uses: actions/setup-dotnet@v3
         with:
-          name: program
-          path: program
+          dotnet-version: '8.0.x'
+      - run: dotnet restore
+      - run: dotnet build
+      - run: dotnet test
+      - run: dotnet publish -o app -r linux-x64 --sc /p:PublishSingleFile=true
+      - run: tar cf app.tar app/
+      - uses: actions/upload-artifact@v3
+        with:
+          name: app.tar
+          path: app.tar
+  test:
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v3
+        with:
+          name: app.tar
+      - run: tar xf app.tar
+      - run: ./app/Lab7
diff --git a/Lab7.csproj b/Lab7.csproj
new file mode 100644
index 0000000..fd4bd08
--- /dev/null
+++ b/Lab7.csproj
@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>
diff --git a/Program.cs b/Program.cs
new file mode 100644
index 0000000..3751555
--- /dev/null
+++ b/Program.cs
@@ -0,0 +1,2 @@
+// See https://aka.ms/new-console-template for more information
+Console.WriteLine("Hello, World!");
diff --git a/main.c b/main.c
deleted file mode 100644
index 33f2906..0000000
--- a/main.c
+++ /dev/null
@@ -1,6 +0,0 @@
-#include <stdio.h>
-int main()
-{
-    printf("Halo, welt!");
-    return 0;
-}
diff --git a/obj/Lab7.csproj.nuget.dgspec.json b/obj/Lab7.csproj.nuget.dgspec.json
new file mode 100644
index 0000000..0d54f86
--- /dev/null
+++ b/obj/Lab7.csproj.nuget.dgspec.json
@@ -0,0 +1,68 @@
+{
+  "format": 1,
+  "restore": {
+    "/Users/trojtek/Desktop/Lab7/Lab7.csproj": {}
+  },
+  "projects": {
+    "/Users/trojtek/Desktop/Lab7/Lab7.csproj": {
+      "version": "1.0.0",
+      "restore": {
+        "projectUniqueName": "/Users/trojtek/Desktop/Lab7/Lab7.csproj",
+        "projectName": "Lab7",
+        "projectPath": "/Users/trojtek/Desktop/Lab7/Lab7.csproj",
+        "packagesPath": "/Users/trojtek/.nuget/packages/",
+        "outputPath": "/Users/trojtek/Desktop/Lab7/obj/",
+        "projectStyle": "PackageReference",
+        "configFilePaths": [
+          "/Users/trojtek/.nuget/NuGet/NuGet.Config"
+        ],
+        "originalTargetFrameworks": [
+          "net9.0"
+        ],
+        "sources": {
+          "/opt/homebrew/Cellar/dotnet/9.0.8/libexec/library-packs": {},
+          "https://api.nuget.org/v3/index.json": {}
+        },
+        "frameworks": {
+          "net9.0": {
+            "targetAlias": "net9.0",
+            "projectReferences": {}
+          }
+        },
+        "warningProperties": {
+          "warnAsError": [
+            "NU1605"
+          ]
+        },
+        "restoreAuditProperties": {
+          "enableAudit": "true",
+          "auditLevel": "low",
+          "auditMode": "direct"
+        },
+        "SdkAnalysisLevel": "9.0.100"
+      },
+      "frameworks": {
+        "net9.0": {
+          "targetAlias": "net9.0",
+          "imports": [
+            "net461",
+            "net462",
+            "net47",
+            "net471",
+            "net472",
+            "net48",
+            "net481"
+          ],
+          "assetTargetFallback": true,
+          "warn": true,
+          "frameworkReferences": {
+            "Microsoft.NETCore.App": {
+              "privateAssets": "all"
+            }
+          },
+          "runtimeIdentifierGraphPath": "/opt/homebrew/Cellar/dotnet/9.0.8/libexec/sdk/9.0.109/PortableRuntimeIdentifierGraph.json"
+        }
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/obj/Lab7.csproj.nuget.g.props b/obj/Lab7.csproj.nuget.g.props
new file mode 100644
index 0000000..d52ed3e
--- /dev/null
+++ b/obj/Lab7.csproj.nuget.g.props
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8" standalone="no"?>
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
+    <RestoreSuccess Condition=" '$(RestoreSuccess)' == '' ">True</RestoreSuccess>
+    <RestoreTool Condition=" '$(RestoreTool)' == '' ">NuGet</RestoreTool>
+    <ProjectAssetsFile Condition=" '$(ProjectAssetsFile)' == '' ">$(MSBuildThisFileDirectory)project.assets.json</ProjectAssetsFile>
+    <NuGetPackageRoot Condition=" '$(NuGetPackageRoot)' == '' ">/Users/trojtek/.nuget/packages/</NuGetPackageRoot>
+    <NuGetPackageFolders Condition=" '$(NuGetPackageFolders)' == '' ">/Users/trojtek/.nuget/packages/</NuGetPackageFolders>
+    <NuGetProjectStyle Condition=" '$(NuGetProjectStyle)' == '' ">PackageReference</NuGetProjectStyle>
+    <NuGetToolVersion Condition=" '$(NuGetToolVersion)' == '' ">6.12.4</NuGetToolVersion>
+  </PropertyGroup>
+  <ItemGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
+    <SourceRoot Include="/Users/trojtek/.nuget/packages/" />
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/obj/Lab7.csproj.nuget.g.targets b/obj/Lab7.csproj.nuget.g.targets
new file mode 100644
index 0000000..3dc06ef
--- /dev/null
+++ b/obj/Lab7.csproj.nuget.g.targets
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8" standalone="no"?>
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" />
\ No newline at end of file
diff --git a/obj/project.assets.json b/obj/project.assets.json
new file mode 100644
index 0000000..2bcfbc6
--- /dev/null
+++ b/obj/project.assets.json
@@ -0,0 +1,73 @@
+{
+  "version": 3,
+  "targets": {
+    "net9.0": {}
+  },
+  "libraries": {},
+  "projectFileDependencyGroups": {
+    "net9.0": []
+  },
+  "packageFolders": {
+    "/Users/trojtek/.nuget/packages/": {}
+  },
+  "project": {
+    "version": "1.0.0",
+    "restore": {
+      "projectUniqueName": "/Users/trojtek/Desktop/Lab7/Lab7.csproj",
+      "projectName": "Lab7",
+      "projectPath": "/Users/trojtek/Desktop/Lab7/Lab7.csproj",
+      "packagesPath": "/Users/trojtek/.nuget/packages/",
+      "outputPath": "/Users/trojtek/Desktop/Lab7/obj/",
+      "projectStyle": "PackageReference",
+      "configFilePaths": [
+        "/Users/trojtek/.nuget/NuGet/NuGet.Config"
+      ],
+      "originalTargetFrameworks": [
+        "net9.0"
+      ],
+      "sources": {
+        "/opt/homebrew/Cellar/dotnet/9.0.8/libexec/library-packs": {},
+        "https://api.nuget.org/v3/index.json": {}
+      },
+      "frameworks": {
+        "net9.0": {
+          "targetAlias": "net9.0",
+          "projectReferences": {}
+        }
+      },
+      "warningProperties": {
+        "warnAsError": [
+          "NU1605"
+        ]
+      },
+      "restoreAuditProperties": {
+        "enableAudit": "true",
+        "auditLevel": "low",
+        "auditMode": "direct"
+      },
+      "SdkAnalysisLevel": "9.0.100"
+    },
+    "frameworks": {
+      "net9.0": {
+        "targetAlias": "net9.0",
+        "imports": [
+          "net461",
+          "net462",
+          "net47",
+          "net471",
+          "net472",
+          "net48",
+          "net481"
+        ],
+        "assetTargetFallback": true,
+        "warn": true,
+        "frameworkReferences": {
+          "Microsoft.NETCore.App": {
+            "privateAssets": "all"
+          }
+        },
+        "runtimeIdentifierGraphPath": "/opt/homebrew/Cellar/dotnet/9.0.8/libexec/sdk/9.0.109/PortableRuntimeIdentifierGraph.json"
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/obj/project.nuget.cache b/obj/project.nuget.cache
new file mode 100644
index 0000000..3c6e0bc
--- /dev/null
+++ b/obj/project.nuget.cache
@@ -0,0 +1,8 @@
+{
+  "version": 2,
+  "dgSpecHash": "L/T5cfyCCZ0=",
+  "success": true,
+  "projectFilePath": "/Users/trojtek/Desktop/Lab7/Lab7.csproj",
+  "expectedPackageFiles": [],
+  "logs": []
+}
\ No newline at end of file