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+// Ex. 4.18: ex04_18.cpp

+// What does this program do?

+#include <iostream>

+

+using std::cout; 

+using std::endl;

+

+int whatIsThis( int [], int );  // function prototype

+

+int main()

+{

+   const int arraySize = 10;

+   int a[ arraySize ] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

+

+   int result = whatIsThis( a, arraySize );

+

+   cout << "Result is " << result << endl;

+

+   return 0;  // indicates successful termination

+

+} // end main

+

+// What does this function do?

+int whatIsThis( int b[], int size )

+{

+   // base case

+   if ( size == 1 )

+      return b[ 0 ];

+

+   // recursive step

+   else

+      return b[ size - 1 ] + whatIsThis( b, size - 1 );

+

+} // end function whatIsThis

+

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

+ * (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.                     *

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