C + + Object-oriented programming: memory allocation and static members of objects

An object is an instance of a class, and memory allocations occur at the time of the declaration of the object, rather than the definition of the class, but each memory allocation does not always allocate memory space for each object's member function, and once it becomes part of the definition of the class, the member function is created once in memory, Because all objects of the same class use the same member function, there is no need to allocate memory space for each object's member function. For each object, it only has the data members to get the corresponding memory space.

As shown, slightly rougher

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static member functions

C + + Object-oriented programming: memory allocation and static members of objects