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diff --git a/Bachelor/Prog1/examples/ch05/Fig05_12.cpp b/Bachelor/Prog1/examples/ch05/Fig05_12.cpp
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index 0000000..c9f089a
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+++ b/Bachelor/Prog1/examples/ch05/Fig05_12.cpp
@@ -0,0 +1,38 @@
+// Fig. 5.12: fig05_12.cpp

+// Attempting to modify data through a

+// non-constant pointer to constant data.

+

+void f( const int * );  // prototype

+

+int main()

+{

+   int y;

+

+   f( &y );   // f attempts illegal modification

+

+   return 0;  // indicates successful termination

+

+} // end main

+

+// xPtr cannot modify the value of the variable 

+// to which it points

+void f( const int *xPtr )

+{

+   *xPtr = 100;  // error: cannot modify a const object

+

+} // end function f

+

+/**************************************************************************

+ * (C) Copyright 1992-2003 by Deitel & Associates, Inc. and Prentice      *

+ * Hall. All Rights Reserved.                                             *

+ *                                                                        *

+ * DISCLAIMER: The authors and publisher of this book have used their     *

+ * best efforts in preparing the book. These efforts include the          *

+ * development, research, and testing of the theories and programs        *

+ * to determine their effectiveness. The authors and publisher make       *

+ * no warranty of any kind, expressed or implied, with regard to these    *

+ * programs or to the documentation contained in these books. The authors *

+ * and publisher shall not be liable in any event for incidental or       *

+ * consequential damages in connection with, or arising out of, the       *

+ * furnishing, performance, or use of these programs.                     *

+ *************************************************************************/