¿Qué, Por qué y Cómo?

We can also use properties when we are programming in C++. In an "standard" way we can define a property class with templates but in Microsoft C++ is more easy. Microsoft C++ (since 6.0) provided us with a "property" attribute. Example: class Human { private: int age; public: // This is the key line __declspec( property( get = GetAge, put = SetAge)) int m_Age; void SetAge(int a) { if (a < 0) age = 0; else age = a; } int GetAge() { return age; } }; void main() { Human h; h.m_Age = 10; // Set age data member to 10 calling SetAge h.m_Age = -10; // Set age data member to 0 calling SetAge cout << h.m_Age; // Get age data member calling GetAge }