// Fig. 10.24: Implementation.h
// Implementation class definition.

class Implementation 
{
public:
   // constructor
   Implementation( int v )  
      : value( v ) // initialize value with v
   { 
      // empty body
   } // end constructor Implementation

   // set value to v
   void setValue( int v )   
   { 
      value = v; // should validate v
   } // end function setValue

   // return value 
   int getValue() const      
   { 
      return value; 
   } // end function getValue
private:
   int value; // data that we would like to hide from the client
}; // end class Implementation

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