diff --git a/sample.cpp b/sample.cpp
new file mode 100644
index 0000000..451c6c4
--- /dev/null
+++ b/sample.cpp
@@ -0,0 +1,11 @@
+#include <sample.h>
+
+int Factorial(int n)
+{
+    int result = 1;
+    for (int i=1; i<=n; i++)
+    {
+        result *= i;
+    }
+    return result;
+}