diff --git a/C#.repo b/C#.repo
new file mode 100644
index 0000000..e69de29
diff --git a/Program.cs b/Program.cs
index 9f3ff5f..1cd022c 100644
--- a/Program.cs
+++ b/Program.cs
@@ -4,6 +4,86 @@ class Program
 {
     static void Main(string[] args)
     {
-        Console.WriteLine("Hello, World!");
+        //dichiarazione e inizializzazione variabili
+        double operatore1, operatore2, risultato;
+        string scelta, risultatoIntermedio; //risultatoIntermedio serve per gestire la divisione per zero
+        bool exit; //serve per far uscire il programma senza stampare il risultato
+        exit=false;
+        risultatoIntermedio="placeholder"; //inizializzato ad un valore casuale per capire se è stata effettuata la divisione o no
+        risultato=0;
+
+        //Output iniziale e richiesta dei due numeri su cui fare i calcoli
+        Console.Write("Inserire il primo numero: ");
+        operatore1=Convert.ToDouble(Console.ReadLine());
+        Console.Write("Inserire il secondo numero: ");
+        operatore2=Convert.ToDouble(Console.ReadLine());
+        Console.WriteLine("Quale operazione eseguire?");
+        Console.WriteLine("1. Somma");
+        Console.WriteLine("2. Differenza");
+        Console.WriteLine("3. Prodotto");
+        Console.WriteLine("4. Quoziente");
+        Console.WriteLine("0. Esci");
+        
+        do{
+            Console.Write("Scelta: ");
+            scelta=Console.ReadLine();
+            switch(scelta){
+                case "0":
+                    exit=true;
+                    break;
+                case "1":
+                    risultato=Somma(operatore1, operatore2);
+                    break;
+                case "2":
+                    risultato=Differenza(operatore1, operatore2);
+                    break;
+                case "3":
+                    risultato=Prodotto(operatore1, operatore2);
+                    break;
+                case "4":
+                    risultatoIntermedio=Quoziente(operatore1, operatore2);
+                    break;
+                default:
+                    Console.WriteLine("Scelta non valida");
+                    break;
+            }
+        }
+        while(scelta!="0" && scelta!="1" && scelta!="2" && scelta!="3" && scelta!="4"); //escludo le scelte non valide dal loop
+        if(exit!=true){//se l'utente non vuole uscire
+            if (risultatoIntermedio=="error"){
+                Console.WriteLine("Impossibile dividere per zero");//gestione della divisione per zero
+            }
+            else{
+                if(risultatoIntermedio!="placeholder"){//se è stata effettuata una divisione
+                    risultato=Convert.ToDouble(risultatoIntermedio);//assegna il risultato della divisione al risultato double
+                }
+                Console.WriteLine("Risultato: " +risultato);//output finale
+            }
+        }
+    }
+    static double Somma(double operatore1, double operatore2) {
+        double risultato;
+        risultato=operatore1+operatore2;
+        return risultato;
+    }
+    static double Differenza(double operatore1, double operatore2) {
+        double risultato;
+        risultato=operatore1-operatore2;
+        return risultato;
+    }
+    static double Prodotto(double operatore1, double operatore2) {
+        double risultato;
+        risultato=operatore1*operatore2;
+        return risultato;
+    }
+    static string Quoziente(double operatore1, double operatore2) {
+        string risultato;
+        if(operatore2==0){//gestione della divisione per zero
+            return "error";
+        }
+        else{
+            risultato=Convert.ToString(operatore1/operatore2);
+            return risultato;
+        }
     }
 }
diff --git a/bin/Debug/net9.0/calcolatrice b/bin/Debug/net9.0/calcolatrice
new file mode 100755
index 0000000..2a0ac67
Binary files /dev/null and b/bin/Debug/net9.0/calcolatrice differ
diff --git a/bin/Debug/net9.0/calcolatrice.deps.json b/bin/Debug/net9.0/calcolatrice.deps.json
new file mode 100644
index 0000000..1ce7336
--- /dev/null
+++ b/bin/Debug/net9.0/calcolatrice.deps.json
@@ -0,0 +1,23 @@
+{
+  "runtimeTarget": {
+    "name": ".NETCoreApp,Version=v9.0",
+    "signature": ""
+  },
+  "compilationOptions": {},
+  "targets": {
+    ".NETCoreApp,Version=v9.0": {
+      "calcolatrice/1.0.0": {
+        "runtime": {
+          "calcolatrice.dll": {}
+        }
+      }
+    }
+  },
+  "libraries": {
+    "calcolatrice/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    }
+  }
+}
\ No newline at end of file
diff --git a/bin/Debug/net9.0/calcolatrice.dll b/bin/Debug/net9.0/calcolatrice.dll
new file mode 100644
index 0000000..c42dfe1
Binary files /dev/null and b/bin/Debug/net9.0/calcolatrice.dll differ
diff --git a/bin/Debug/net9.0/calcolatrice.pdb b/bin/Debug/net9.0/calcolatrice.pdb
new file mode 100644
index 0000000..9f7e8f9
Binary files /dev/null and b/bin/Debug/net9.0/calcolatrice.pdb differ
diff --git a/bin/Debug/net9.0/calcolatrice.runtimeconfig.json b/bin/Debug/net9.0/calcolatrice.runtimeconfig.json
new file mode 100644
index 0000000..b19c3c8
--- /dev/null
+++ b/bin/Debug/net9.0/calcolatrice.runtimeconfig.json
@@ -0,0 +1,12 @@
+{
+  "runtimeOptions": {
+    "tfm": "net9.0",
+    "framework": {
+      "name": "Microsoft.NETCore.App",
+      "version": "9.0.0"
+    },
+    "configProperties": {
+      "System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization": false
+    }
+  }
+}
\ No newline at end of file
diff --git a/obj/Debug/net9.0/.NETCoreApp,Version=v9.0.AssemblyAttributes.cs b/obj/Debug/net9.0/.NETCoreApp,Version=v9.0.AssemblyAttributes.cs
new file mode 100644
index 0000000..9e76325
--- /dev/null
+++ b/obj/Debug/net9.0/.NETCoreApp,Version=v9.0.AssemblyAttributes.cs
@@ -0,0 +1,4 @@
+// <autogenerated />
+using System;
+using System.Reflection;
+[assembly: global::System.Runtime.Versioning.TargetFrameworkAttribute(".NETCoreApp,Version=v9.0", FrameworkDisplayName = ".NET 9.0")]
diff --git a/obj/Debug/net9.0/apphost b/obj/Debug/net9.0/apphost
new file mode 100755
index 0000000..2a0ac67
Binary files /dev/null and b/obj/Debug/net9.0/apphost differ
diff --git a/obj/Debug/net9.0/calcolatrice.AssemblyInfo.cs b/obj/Debug/net9.0/calcolatrice.AssemblyInfo.cs
new file mode 100644
index 0000000..84a98d1
--- /dev/null
+++ b/obj/Debug/net9.0/calcolatrice.AssemblyInfo.cs
@@ -0,0 +1,22 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+using System;
+using System.Reflection;
+
+[assembly: System.Reflection.AssemblyCompanyAttribute("calcolatrice")]
+[assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
+[assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+81aee42076c07c4c339197485cbd47a851e6dddf")]
+[assembly: System.Reflection.AssemblyProductAttribute("calcolatrice")]
+[assembly: System.Reflection.AssemblyTitleAttribute("calcolatrice")]
+[assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
+
+// Generato dalla classe WriteCodeFragment di MSBuild.
+
diff --git a/obj/Debug/net9.0/calcolatrice.AssemblyInfoInputs.cache b/obj/Debug/net9.0/calcolatrice.AssemblyInfoInputs.cache
new file mode 100644
index 0000000..1ecf551
--- /dev/null
+++ b/obj/Debug/net9.0/calcolatrice.AssemblyInfoInputs.cache
@@ -0,0 +1 @@
+0fa6a2a533d06ae21ae65e08e83ea81139a4541d35132c49b55ca4b3fef5af4c
diff --git a/obj/Debug/net9.0/calcolatrice.GeneratedMSBuildEditorConfig.editorconfig b/obj/Debug/net9.0/calcolatrice.GeneratedMSBuildEditorConfig.editorconfig
new file mode 100644
index 0000000..ee4640c
--- /dev/null
+++ b/obj/Debug/net9.0/calcolatrice.GeneratedMSBuildEditorConfig.editorconfig
@@ -0,0 +1,15 @@
+is_global = true
+build_property.TargetFramework = net9.0
+build_property.TargetPlatformMinVersion = 
+build_property.UsingMicrosoftNETSdkWeb = 
+build_property.ProjectTypeGuids = 
+build_property.InvariantGlobalization = 
+build_property.PlatformNeutralAssembly = 
+build_property.EnforceExtendedAnalyzerRules = 
+build_property._SupportedPlatformList = Linux,macOS,Windows
+build_property.RootNamespace = calcolatrice
+build_property.ProjectDir = /home/BrainTheBest5/git/calcolatrice/
+build_property.EnableComHosting = 
+build_property.EnableGeneratedComInterfaceComImportInterop = 
+build_property.EffectiveAnalysisLevelStyle = 9.0
+build_property.EnableCodeStyleSeverity = 
diff --git a/obj/Debug/net9.0/calcolatrice.GlobalUsings.g.cs b/obj/Debug/net9.0/calcolatrice.GlobalUsings.g.cs
new file mode 100644
index 0000000..8578f3d
--- /dev/null
+++ b/obj/Debug/net9.0/calcolatrice.GlobalUsings.g.cs
@@ -0,0 +1,8 @@
+// <auto-generated/>
+global using global::System;
+global using global::System.Collections.Generic;
+global using global::System.IO;
+global using global::System.Linq;
+global using global::System.Net.Http;
+global using global::System.Threading;
+global using global::System.Threading.Tasks;
diff --git a/obj/Debug/net9.0/calcolatrice.assets.cache b/obj/Debug/net9.0/calcolatrice.assets.cache
new file mode 100644
index 0000000..906e977
Binary files /dev/null and b/obj/Debug/net9.0/calcolatrice.assets.cache differ
diff --git a/obj/Debug/net9.0/calcolatrice.csproj.CoreCompileInputs.cache b/obj/Debug/net9.0/calcolatrice.csproj.CoreCompileInputs.cache
new file mode 100644
index 0000000..61383e9
--- /dev/null
+++ b/obj/Debug/net9.0/calcolatrice.csproj.CoreCompileInputs.cache
@@ -0,0 +1 @@
+60c8619024e0dede7b06554fddd6bd5bb91b6b74f6c31ceb25355613b71000d7
diff --git a/obj/Debug/net9.0/calcolatrice.csproj.FileListAbsolute.txt b/obj/Debug/net9.0/calcolatrice.csproj.FileListAbsolute.txt
new file mode 100644
index 0000000..548c7a9
--- /dev/null
+++ b/obj/Debug/net9.0/calcolatrice.csproj.FileListAbsolute.txt
@@ -0,0 +1,14 @@
+/home/BrainTheBest5/git/calcolatrice/obj/Debug/net9.0/calcolatrice.GeneratedMSBuildEditorConfig.editorconfig
+/home/BrainTheBest5/git/calcolatrice/obj/Debug/net9.0/calcolatrice.AssemblyInfoInputs.cache
+/home/BrainTheBest5/git/calcolatrice/obj/Debug/net9.0/calcolatrice.AssemblyInfo.cs
+/home/BrainTheBest5/git/calcolatrice/obj/Debug/net9.0/calcolatrice.csproj.CoreCompileInputs.cache
+/home/BrainTheBest5/git/calcolatrice/bin/Debug/net9.0/calcolatrice
+/home/BrainTheBest5/git/calcolatrice/bin/Debug/net9.0/calcolatrice.deps.json
+/home/BrainTheBest5/git/calcolatrice/bin/Debug/net9.0/calcolatrice.runtimeconfig.json
+/home/BrainTheBest5/git/calcolatrice/bin/Debug/net9.0/calcolatrice.dll
+/home/BrainTheBest5/git/calcolatrice/bin/Debug/net9.0/calcolatrice.pdb
+/home/BrainTheBest5/git/calcolatrice/obj/Debug/net9.0/calcolatrice.dll
+/home/BrainTheBest5/git/calcolatrice/obj/Debug/net9.0/refint/calcolatrice.dll
+/home/BrainTheBest5/git/calcolatrice/obj/Debug/net9.0/calcolatrice.pdb
+/home/BrainTheBest5/git/calcolatrice/obj/Debug/net9.0/calcolatrice.genruntimeconfig.cache
+/home/BrainTheBest5/git/calcolatrice/obj/Debug/net9.0/ref/calcolatrice.dll
diff --git a/obj/Debug/net9.0/calcolatrice.dll b/obj/Debug/net9.0/calcolatrice.dll
new file mode 100644
index 0000000..c42dfe1
Binary files /dev/null and b/obj/Debug/net9.0/calcolatrice.dll differ
diff --git a/obj/Debug/net9.0/calcolatrice.genruntimeconfig.cache b/obj/Debug/net9.0/calcolatrice.genruntimeconfig.cache
new file mode 100644
index 0000000..7bdd6e8
--- /dev/null
+++ b/obj/Debug/net9.0/calcolatrice.genruntimeconfig.cache
@@ -0,0 +1 @@
+a2ffa4f6d06a33e4ef0f6ab8ed9484a6e0703bea5f323c1c744ab773e754a4d5
diff --git a/obj/Debug/net9.0/calcolatrice.pdb b/obj/Debug/net9.0/calcolatrice.pdb
new file mode 100644
index 0000000..9f7e8f9
Binary files /dev/null and b/obj/Debug/net9.0/calcolatrice.pdb differ
diff --git a/obj/Debug/net9.0/ref/calcolatrice.dll b/obj/Debug/net9.0/ref/calcolatrice.dll
new file mode 100644
index 0000000..051a3aa
Binary files /dev/null and b/obj/Debug/net9.0/ref/calcolatrice.dll differ
diff --git a/obj/Debug/net9.0/refint/calcolatrice.dll b/obj/Debug/net9.0/refint/calcolatrice.dll
new file mode 100644
index 0000000..051a3aa
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