diff --git a/Program.cs b/Program.cs
index 40337fe..0830313 100644
--- a/Program.cs
+++ b/Program.cs
@@ -1,9 +1,28 @@
 namespace ricorsione_2;
 
-class Program
-{
-    static void Main(string[] args)
-    {
-        Console.WriteLine("Hello, World!");
+class Program {
+    static void Main(string[] args) {
+        Console.Write("Inserire un numero: ");
+        Console.WriteLine(Ricorsione(Convert.ToInt32(Console.ReadLine())));
+    }
+
+    static int Ricorsione(int p_numero1) { //aggiungi uno a p_numero1 p_numero2 volte
+        int temp, ritorno = 0;
+        if (p_numero1 > 10) {
+            //somma le cifre del numero
+            while (p_numero1 > 0) {
+                temp = p_numero1 % 10; //ultima cifra
+                p_numero1 = p_numero1 / 10; //rimuovo l'ultima cifra dal numero
+                ritorno = ritorno + temp;
+            }
+            ritorno = Ricorsione(ritorno);
+
+        }
+        else {
+            ritorno = p_numero1;
+        }
+
+        return ritorno;
     }
 }
+
diff --git a/bin/Debug/net9.0/ricorsione_2 b/bin/Debug/net9.0/ricorsione_2
new file mode 100755
index 0000000..22e2041
Binary files /dev/null and b/bin/Debug/net9.0/ricorsione_2 differ
diff --git a/bin/Debug/net9.0/ricorsione_2.deps.json b/bin/Debug/net9.0/ricorsione_2.deps.json
new file mode 100644
index 0000000..b900853
--- /dev/null
+++ b/bin/Debug/net9.0/ricorsione_2.deps.json
@@ -0,0 +1,23 @@
+{
+  "runtimeTarget": {
+    "name": ".NETCoreApp,Version=v9.0",
+    "signature": ""
+  },
+  "compilationOptions": {},
+  "targets": {
+    ".NETCoreApp,Version=v9.0": {
+      "ricorsione_2/1.0.0": {
+        "runtime": {
+          "ricorsione_2.dll": {}
+        }
+      }
+    }
+  },
+  "libraries": {
+    "ricorsione_2/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    }
+  }
+}
\ No newline at end of file
diff --git a/bin/Debug/net9.0/ricorsione_2.dll b/bin/Debug/net9.0/ricorsione_2.dll
new file mode 100644
index 0000000..ceee604
Binary files /dev/null and b/bin/Debug/net9.0/ricorsione_2.dll differ
diff --git a/bin/Debug/net9.0/ricorsione_2.pdb b/bin/Debug/net9.0/ricorsione_2.pdb
new file mode 100644
index 0000000..bfa5680
Binary files /dev/null and b/bin/Debug/net9.0/ricorsione_2.pdb differ
diff --git a/bin/Debug/net9.0/ricorsione_2.runtimeconfig.json b/bin/Debug/net9.0/ricorsione_2.runtimeconfig.json
new file mode 100644
index 0000000..b19c3c8
--- /dev/null
+++ b/bin/Debug/net9.0/ricorsione_2.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..22e2041
Binary files /dev/null and b/obj/Debug/net9.0/apphost differ
diff --git a/obj/Debug/net9.0/ref/ricorsione_2.dll b/obj/Debug/net9.0/ref/ricorsione_2.dll
new file mode 100644
index 0000000..e0467e3
Binary files /dev/null and b/obj/Debug/net9.0/ref/ricorsione_2.dll differ
diff --git a/obj/Debug/net9.0/refint/ricorsione_2.dll b/obj/Debug/net9.0/refint/ricorsione_2.dll
new file mode 100644
index 0000000..e0467e3
Binary files /dev/null and b/obj/Debug/net9.0/refint/ricorsione_2.dll differ
diff --git a/obj/Debug/net9.0/ricorsione_2.AssemblyInfo.cs b/obj/Debug/net9.0/ricorsione_2.AssemblyInfo.cs
new file mode 100644
index 0000000..fd570bf
--- /dev/null
+++ b/obj/Debug/net9.0/ricorsione_2.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("ricorsione_2")]
+[assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
+[assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+7093ef3e992f18c908438f22a5152197c48b0621")]
+[assembly: System.Reflection.AssemblyProductAttribute("ricorsione_2")]
+[assembly: System.Reflection.AssemblyTitleAttribute("ricorsione_2")]
+[assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
+
+// Generated by the MSBuild WriteCodeFragment class.
+
diff --git a/obj/Debug/net9.0/ricorsione_2.AssemblyInfoInputs.cache b/obj/Debug/net9.0/ricorsione_2.AssemblyInfoInputs.cache
new file mode 100644
index 0000000..4cce45d
--- /dev/null
+++ b/obj/Debug/net9.0/ricorsione_2.AssemblyInfoInputs.cache
@@ -0,0 +1 @@
+c6ecc8a16734995aaa5a5e38355e2e60006a2930aa54237d6f81e3f6eb05cfdb
diff --git a/obj/Debug/net9.0/ricorsione_2.GeneratedMSBuildEditorConfig.editorconfig b/obj/Debug/net9.0/ricorsione_2.GeneratedMSBuildEditorConfig.editorconfig
new file mode 100644
index 0000000..2179dbf
--- /dev/null
+++ b/obj/Debug/net9.0/ricorsione_2.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 = ricorsione_2
+build_property.ProjectDir = /home/Verde/git/ricorsione_2/
+build_property.EnableComHosting = 
+build_property.EnableGeneratedComInterfaceComImportInterop = 
+build_property.EffectiveAnalysisLevelStyle = 9.0
+build_property.EnableCodeStyleSeverity = 
diff --git a/obj/Debug/net9.0/ricorsione_2.GlobalUsings.g.cs b/obj/Debug/net9.0/ricorsione_2.GlobalUsings.g.cs
new file mode 100644
index 0000000..8578f3d
--- /dev/null
+++ b/obj/Debug/net9.0/ricorsione_2.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/ricorsione_2.assets.cache b/obj/Debug/net9.0/ricorsione_2.assets.cache
new file mode 100644
index 0000000..2582249
Binary files /dev/null and b/obj/Debug/net9.0/ricorsione_2.assets.cache differ
diff --git a/obj/Debug/net9.0/ricorsione_2.csproj.CoreCompileInputs.cache b/obj/Debug/net9.0/ricorsione_2.csproj.CoreCompileInputs.cache
new file mode 100644
index 0000000..c68d64e
--- /dev/null
+++ b/obj/Debug/net9.0/ricorsione_2.csproj.CoreCompileInputs.cache
@@ -0,0 +1 @@
+09bcf0fc48665f90f3e471ee6d026762b69b6704f94718ee7a429b5363e145a3
diff --git a/obj/Debug/net9.0/ricorsione_2.csproj.FileListAbsolute.txt b/obj/Debug/net9.0/ricorsione_2.csproj.FileListAbsolute.txt
new file mode 100644
index 0000000..8d3b901
--- /dev/null
+++ b/obj/Debug/net9.0/ricorsione_2.csproj.FileListAbsolute.txt
@@ -0,0 +1,14 @@
+/home/Verde/git/ricorsione_2/bin/Debug/net9.0/ricorsione_2
+/home/Verde/git/ricorsione_2/bin/Debug/net9.0/ricorsione_2.deps.json
+/home/Verde/git/ricorsione_2/bin/Debug/net9.0/ricorsione_2.runtimeconfig.json
+/home/Verde/git/ricorsione_2/bin/Debug/net9.0/ricorsione_2.dll
+/home/Verde/git/ricorsione_2/bin/Debug/net9.0/ricorsione_2.pdb
+/home/Verde/git/ricorsione_2/obj/Debug/net9.0/ricorsione_2.GeneratedMSBuildEditorConfig.editorconfig
+/home/Verde/git/ricorsione_2/obj/Debug/net9.0/ricorsione_2.AssemblyInfoInputs.cache
+/home/Verde/git/ricorsione_2/obj/Debug/net9.0/ricorsione_2.AssemblyInfo.cs
+/home/Verde/git/ricorsione_2/obj/Debug/net9.0/ricorsione_2.csproj.CoreCompileInputs.cache
+/home/Verde/git/ricorsione_2/obj/Debug/net9.0/ricorsione_2.dll
+/home/Verde/git/ricorsione_2/obj/Debug/net9.0/refint/ricorsione_2.dll
+/home/Verde/git/ricorsione_2/obj/Debug/net9.0/ricorsione_2.pdb
+/home/Verde/git/ricorsione_2/obj/Debug/net9.0/ricorsione_2.genruntimeconfig.cache
+/home/Verde/git/ricorsione_2/obj/Debug/net9.0/ref/ricorsione_2.dll
diff --git a/obj/Debug/net9.0/ricorsione_2.dll b/obj/Debug/net9.0/ricorsione_2.dll
new file mode 100644
index 0000000..ceee604
Binary files /dev/null and b/obj/Debug/net9.0/ricorsione_2.dll differ
diff --git a/obj/Debug/net9.0/ricorsione_2.genruntimeconfig.cache b/obj/Debug/net9.0/ricorsione_2.genruntimeconfig.cache
new file mode 100644
index 0000000..d525cde
--- /dev/null
+++ b/obj/Debug/net9.0/ricorsione_2.genruntimeconfig.cache
@@ -0,0 +1 @@
+b2809d35c2fba8c10e830b025ebf2346c418c6784f431a6da4a120ea79fc8a56
diff --git a/obj/Debug/net9.0/ricorsione_2.pdb b/obj/Debug/net9.0/ricorsione_2.pdb
new file mode 100644
index 0000000..bfa5680
Binary files /dev/null and b/obj/Debug/net9.0/ricorsione_2.pdb differ