From 33613a85afc4b1481367fbe92a17ee59c240250b Mon Sep 17 00:00:00 2001
From: Sven Eisenhauer <sven@sven-eisenhauer.net>
Date: Fri, 10 Nov 2023 15:11:48 +0100
Subject: add new repo

---
 Bachelor/Prog1/examples/ch07/Fig07_11/Fig07_11.cpp | 72 ++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 Bachelor/Prog1/examples/ch07/Fig07_11/Fig07_11.cpp

(limited to 'Bachelor/Prog1/examples/ch07/Fig07_11')

diff --git a/Bachelor/Prog1/examples/ch07/Fig07_11/Fig07_11.cpp b/Bachelor/Prog1/examples/ch07/Fig07_11/Fig07_11.cpp
new file mode 100644
index 0000000..995bc86
--- /dev/null
+++ b/Bachelor/Prog1/examples/ch07/Fig07_11/Fig07_11.cpp
@@ -0,0 +1,72 @@
+// Fig. 7.11: fig07_11.cpp  
+// Friends can access private members of a class.
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+// Count class definition 
+// (note that there is no friendship declaration)
+class Count {
+   friend void setX( Count &, int ); // friend declaration
+
+public:
+
+   // constructor
+   Count()
+      : x( 0 )  // initialize x to 0
+   { 
+      // empty body
+   
+   } // end constructor Count
+
+   // output x 
+   void print() const       
+   { 
+      cout << x << endl; 
+
+   } // end function print
+
+private:
+   int x;  // data member
+
+}; // end class Count
+
+// function setX can modify private data of Count 
+// because setX is declared as a friend of Count  
+void setX( Count &c, int val )
+{
+   c.x = val;  // legal: setX is a friend of Count
+
+} // end function setX
+
+int main()
+{
+   Count counter;       // create Count object
+
+   cout << "counter.x after instantiation: ";
+   counter.print();
+
+   setX( counter, 8 );  // set x with a friend
+
+   cout << "counter.x after call to setX friend function: ";
+   counter.print();
+
+   return 0;
+
+} // end main
+
+/**************************************************************************
+ * (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.                     *
+ *************************************************************************/
-- 
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