diff --git a/Greeter.cs b/Greeter.cs
new file mode 100644
index 0000000..c8e3ad8
--- /dev/null
+++ b/Greeter.cs
@@ -0,0 +1,11 @@
+public class Greeter
+{
+    public static string Greet(string name)
+    {
+        if (string.IsNullOrWhiteSpace(name))
+        {
+            return "Привет, незнакомец!";
+        }
+        return $"Привет, {name}!";
+    }
+}