diff --git a/ax_funktions.hpp b/ax_funktions.hpp
index 6b88b1a..f5a34dc 100644
--- a/ax_funktions.hpp
+++ b/ax_funktions.hpp
@@ -13,4 +13,8 @@ namespace ax{
     int sqrt(int x){
         return x*x;
     }
+
+    char shift(char x){
+        return x-1;
+    }
 }
\ No newline at end of file
diff --git a/main.cpp b/main.cpp
index 9ae665e..3990528 100644
--- a/main.cpp
+++ b/main.cpp
@@ -18,5 +18,9 @@ main()
     }
 
     ax::print_number(ax::sqrt(3));
+
+    std::cout << "a " << "wird zu: " << ax::shift('a')<< std::endl;
+
+    
     
 };
\ No newline at end of file