自动创建get/set代码

#define CREATE_VAR(name, type)            \
    public:                               \
        void set_##name(const type value) \
        {                                 \
            m_##name = value;             \
        }                                 \
        type get_##name() const           \
        {                                 \
            return m_##name;              \
        }                                 \
    private:                              \
        type m_##name;

class Object {
    CREATE_VAR(name, string)
    CREATE_VAR(age, int)
};

Object object;
object.set_name("Tony");
cout << object.get_name();
object.set_age(20);
cout << object.get_age();