Composition();
~Composition();
- Composition(const Composition &) = delete;
- Composition &operator =(const Composition &) = delete;
+ Composition(const Composition &) = default;
+ Composition &operator =(const Composition &) = default;
- Composition(Composition &&) = delete;
- Composition &operator =(Composition &&) = delete;
+ Composition(Composition &&) = default;
+ Composition &operator =(Composition &&) = default;
public:
void Add(int res, double amount);