c 经典问题(国外英语资料).docVIP

c 经典问题(国外英语资料) C++ classic question.Txt Lao Tze Huyou children called education, children Huyou, Lao Zi called deception, flicker each other, called generation gap. The man in this world, I want to use what color to attract you. 1. in the class of ordinary member function call virtual function, what is the situation? (object, reference, pointer) Polymorphism, in fact, is the key to the Template Method model 2. on the initialization order of member variables, several dependent member variables are initialized, so that the constructor is written. In the initialization list, the initialization order of the member variables is their order in the class rather than the order in the list. 4. write is-a and has-a. Class Pet{}; Class Dog: public Pet{}; Class Boy{Pet* m_pPet;}; 5. struct vs. class. 1) the default access attribute is struct, public, and class is private 2) default inheritance property, struct is public, and class is private 3) class can be used to declare template parameters, and struct cannot 7. STL Vector inside the implementation (internal space applications and distribution) The Vector name is Chinese dynamic array, the internal data structure is an array, but when the array element is not enough, must be dynamically redistributed, generally is now two times the size, and then put the original array to copy the contents of the past. So, in general, its access speed is similar to that of a general array, and its performance declines only when redistribution occurs 9. why use struct? The default attribute of the member is different, and in struct, it is mainly as a collection of data. 10. how can a class not be instantiated? 1, constructor privatization, 2, abstract class 11. the difference between private inheritance and public inheritance. Private inheritance: inheritance is implemented only, and has-a is not inherited Public inheritance: inheritance, interface, and implementation is-a 12., void, *p question Not + + 13. the difference and relation between