diff --git a/systemweiche.cpp b/systemweiche.cpp
new file mode 100644
index 0000000..6daaab2
--- /dev/null
+++ b/systemweiche.cpp
@@ -0,0 +1,19 @@
+#include <iostream>
+
+using namespace std;
+
+#ifdef __APPLE__
+    #define CEO "Tim Cook"
+#elif __unix__
+    #define CEO "Linus Torvalds"
+#elif __WIN32
+    #define CEO "Steve Ballmer"
+#else
+    #define CEO "Marc Hannebrook"
+#endif
+
+int main()
+{
+    cout << CEO << endl;
+    return 0;
+}