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diff --git a/Bachelor/Prog1/examples/ch02/Fig02_20.cpp b/Bachelor/Prog1/examples/ch02/Fig02_20.cpp
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+++ b/Bachelor/Prog1/examples/ch02/Fig02_20.cpp
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+// Fig. 2.20: fig02_20.cpp
+// Summation with for.
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+// function main begins program execution
+int main()
+{
+   int sum = 0;                       // initialize sum
+
+   // sum even integers from 2 through 100
+   for ( int number = 2; number <= 100; number += 2 )
+      sum += number;                  // add number to sum
+
+   cout << "Sum is " << sum << endl;  // output sum
+   return 0;                          // successful termination
+
+} // end function 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.                     *
+ *************************************************************************/