diff --git a/csharp10.cs b/csharp10.cs
new file mode 100644
index 0000000..cd0d575
--- /dev/null
+++ b/csharp10.cs
@@ -0,0 +1,11 @@
+foreach (var i in Enumerable.Range(1, 100))
+    Console.WriteLine(FizzBuzz(i));
+
+static string FizzBuzz(int number) =>
+    (number % 3, number % 5) switch 
+    {
+        (0, 0) => "FizzBuzz",
+        (0, _) => "Fizz",
+        (_, 0) => "Buzz",
+        _ => number.ToString(),
+    };