diff --git a/Program.cs b/Program.cs
index f892ca8..6822aca 100644
--- a/Program.cs
+++ b/Program.cs
@@ -8,6 +8,7 @@ class Program {
     static void Menu() {
         Console.Clear();
         int scelta;
+        const int LUNGHEZZA = 100;
         string stringa1, stringa2;
         do {
             Console.WriteLine("Inserire un'opzione:");
@@ -28,7 +29,7 @@ class Program {
                     Console.Clear();
                     stringa1 = Input();
                     stringa2 = Input();
-                    if (Controllo(stringa1, stringa2)) {
+                    if (Controllo1(stringa1, stringa2)) {
                         Console.WriteLine(AlternaCaratteri(stringa1, stringa2));
                     }
                     else {
@@ -43,7 +44,14 @@ class Program {
                     break;
                 case 3:
                     Console.Clear();
-                    Console.WriteLine(PrimoCarattereMaiuscolo(Input()));
+                    stringa1 = Input();
+
+                    if (Controllo2(stringa1, LUNGHEZZA)) {
+                        Console.WriteLine(PrimoCarattereMaiuscolo(stringa1));
+                    }
+                    else {
+                        Console.WriteLine($"Errore: la frase non può essere più lunga di {LUNGHEZZA} caratteri");
+                    }
                     Pausa();
                     break;
                 case 4:
@@ -82,7 +90,7 @@ class Program {
         return Console.ReadLine();
     }
 
-    static bool Controllo(string p_stringa1, string p_stringa2) {
+    static bool Controllo1(string p_stringa1, string p_stringa2) {
         bool ritorno;
         if (p_stringa1.Length == p_stringa2.Length) {
             ritorno = true;
@@ -136,10 +144,26 @@ class Program {
         return string.Join("", ritorno).Split(inutile).First();
     }
 
-    static string PrimoCarattereMaiuscolo(string p_stringa) {
-        string ritorno = char.ToUpper(p_stringa[0]) + p_stringa.Split(p_stringa[0]).Last();
-
+    static bool Controllo2(string p_stringa1, int p_lunghezza) {
+        bool ritorno;
+        if (p_stringa1.Length < p_lunghezza) {
+            ritorno = true;
+        }
+        else {
+            ritorno = false;
+        }
 
         return ritorno;
+
+    }
+
+    static string PrimoCarattereMaiuscolo(string p_stringa) {
+        string[] substrings = p_stringa.Split();
+
+        for (int i = 0; i < substrings.Length; i++) {
+            substrings[i] = char.ToUpper(substrings[i][0]) + substrings[i].Split(substrings[i][0]).Last().ToLower();
+        }
+
+        return string.Join(" ", substrings);
     }
 }
diff --git a/bin/Debug/net9.0/strings_3.dll b/bin/Debug/net9.0/strings_3.dll
index 53db1de..c26ffef 100644
Binary files a/bin/Debug/net9.0/strings_3.dll and b/bin/Debug/net9.0/strings_3.dll differ
diff --git a/bin/Debug/net9.0/strings_3.pdb b/bin/Debug/net9.0/strings_3.pdb
index 193fe6b..2152a9d 100644
Binary files a/bin/Debug/net9.0/strings_3.pdb and b/bin/Debug/net9.0/strings_3.pdb differ
diff --git a/obj/Debug/net9.0/ref/strings_3.dll b/obj/Debug/net9.0/ref/strings_3.dll
index e81b3a6..b9ab9a2 100644
Binary files a/obj/Debug/net9.0/ref/strings_3.dll and b/obj/Debug/net9.0/ref/strings_3.dll differ
diff --git a/obj/Debug/net9.0/refint/strings_3.dll b/obj/Debug/net9.0/refint/strings_3.dll
index e81b3a6..b9ab9a2 100644
Binary files a/obj/Debug/net9.0/refint/strings_3.dll and b/obj/Debug/net9.0/refint/strings_3.dll differ
diff --git a/obj/Debug/net9.0/strings_3.AssemblyInfo.cs b/obj/Debug/net9.0/strings_3.AssemblyInfo.cs
index f7e6d00..9b559bf 100644
--- a/obj/Debug/net9.0/strings_3.AssemblyInfo.cs
+++ b/obj/Debug/net9.0/strings_3.AssemblyInfo.cs
@@ -13,10 +13,10 @@ using System.Reflection;
 [assembly: System.Reflection.AssemblyCompanyAttribute("strings_3")]
 [assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
 [assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
-[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+b2b1285d037b00410936752e5a623c5f2672c263")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+9786e2adcd46bff810419c77a664ff038d4fb2bd")]
 [assembly: System.Reflection.AssemblyProductAttribute("strings_3")]
 [assembly: System.Reflection.AssemblyTitleAttribute("strings_3")]
 [assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
 
-// Generated by the MSBuild WriteCodeFragment class.
+// Generato dalla classe WriteCodeFragment di MSBuild.
 
diff --git a/obj/Debug/net9.0/strings_3.AssemblyInfoInputs.cache b/obj/Debug/net9.0/strings_3.AssemblyInfoInputs.cache
index 3b1d319..a0c2987 100644
--- a/obj/Debug/net9.0/strings_3.AssemblyInfoInputs.cache
+++ b/obj/Debug/net9.0/strings_3.AssemblyInfoInputs.cache
@@ -1 +1 @@
-ba2e54e8180aab2a82a9f8d460afffb6112678b22fc4465b8b01a6662a39f037
+62074303f49b761550171178f383c453b8b19d1e02f472014128ddf26529322b
diff --git a/obj/Debug/net9.0/strings_3.dll b/obj/Debug/net9.0/strings_3.dll
index 53db1de..c26ffef 100644
Binary files a/obj/Debug/net9.0/strings_3.dll and b/obj/Debug/net9.0/strings_3.dll differ
diff --git a/obj/Debug/net9.0/strings_3.pdb b/obj/Debug/net9.0/strings_3.pdb
index 193fe6b..2152a9d 100644
Binary files a/obj/Debug/net9.0/strings_3.pdb and b/obj/Debug/net9.0/strings_3.pdb differ