#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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