#include <iostream>
using namespace std;
 
class Adder{
   public:
      // constructor
      Adder()
      {
      }
      // interface to outside world
      void addNum(int number)
      {
          total += number;
      }
      // interface to outside world
      int getTotal()
      {
          return total;
      };
   private:
      // hidden data from outside world
      int total = 0;
};
int main( )
{
   Adder a;
 
   a.addNum(10);
   a.addNum(20);
   a.addNum(30);
 
   cout << "Total " << a.getTotal() <<endl;
   return 0;
}

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