diff --git a/ex1/a.py b/ex1/a.py
new file mode 100644
index 0000000..ccaba7b
--- /dev/null
+++ b/ex1/a.py
@@ -0,0 +1,4 @@
+import sys
+
+frase = " ".join(sys.argv[1:])
+print("Hai scritto:", frase)
diff --git a/ex1/b.py b/ex1/b.py
new file mode 100644
index 0000000..44343a0
--- /dev/null
+++ b/ex1/b.py
@@ -0,0 +1,25 @@
+import argparse
+import sys
+
+VALORI_AMMESSI = {"toto", "tata", "titi"}
+
+parser = argparse.ArgumentParser()
+
+parser.add_argument(
+    '-t', '--target',
+    nargs='+',
+    choices=VALORI_AMMESSI,
+    help="Specifica da 1 a 3 valori tra: toto, tata, titi.",
+    required=True
+)
+
+# Esegui parsing
+args = parser.parse_args()
+
+# Verifica massimo 3 valori
+if len(args.target) > 3:
+    print("Errore: puoi fornire **al massimo 3** valori tra 'toto', 'tata' e 'titi'.", file=sys.stderr)
+    sys.exit(1)
+
+# Tutto OK
+print("Valori accettati:", args.target)
diff --git a/ex1/c.py b/ex1/c.py
new file mode 100644
index 0000000..4a1a801
--- /dev/null
+++ b/ex1/c.py
@@ -0,0 +1,10 @@
+import sys
+import pyfiglet
+
+if len(sys.argv) < 2:
+    print("Usa: python script.py 'testo da convertire'")
+    sys.exit(1)
+
+text = " ".join(sys.argv[1:])
+ascii_art = pyfiglet.figlet_format(text)
+print(ascii_art)