protected members

 the inheritance of derived classes is summarized as follows: Inheritance Way Description Public The public and protected members of the base class are inherited by the derived class and remain in their original

Summarize:1. The difference between protected and private is that the access designator limit of the protected can be accessed by the member functions of the derived class, and private cannot2. The difference between protected and publice is that

Section 9-bindingIn addition to restricted access, the access method also determines which method calls the quilt class or which attribute accesses the quilt class. the association between function calls and functions and the relationship between

1/////////////////////////////////////////////////////////////////////////constant Pointers: variables cannot be modified, pointers can be modifiedConst int*p;int Const*p;//pointer constants: Pointers are not modifiable, variables can be modifiedint*

Object-Oriented Programming has four main features: abstraction, encapsulation, inheritance and polymorphism. Inheritance is one of the most important features I think. It can be said that inheritance is the essence of object-oriented. For example,

Section 9-binding. * + Tips + | this document uses Haohappy to read CorePHPProgramming | the notes in chapter ClassesandObjects in | mainly translated by + individual * + -------------------------------------------------------------------------------

UML (Unified Modeling Language), Unified Modeling Language to study classes and objectsObject: Class NameMyprinter:printer+instant:bool Accessibility : member Name: type of memberObject: the component part of the OPP application . including

Reference Code#include #include using namespace std;class father { int id;protected:int tt;public: Father (): ID (3) {}void print () {printf ("This was Father public function%d\n", id);} void Changeid () {id=10;printf ("Change the value of ID to 1

L Dynamic BindingVoidprint_total (ostream &os, const item_base &item, size_t N){os}The function works very normally: the book and Net_price functions that call their item parameters print the results. There are two points worth noting about this

First:Private, Public,protectedthe access scope of the access designator. Private: only by 1. Functions in this class,2. Its friend function access. The object of the class cannot be accessed by any other access. protected: can be 1. Functions in

6. Programming language Knowledge 6.1 basic knowledge of programming language classification of 6.1.1 programming languageThere are 3 factors in programming language, namely, grammar, semantics, pragmaticsSyntax: The structure or form of a

In addition to restricting access, the access mode also determines which method will be called by the quilt class or which property will be accessed by the quilt class. The Association of a function call to the function itself, and the relationship

Protected keywords:Excerpt from MSDNprotected The member-list keyword specifies access to the member in the group until the end of the next access descriptor (public or private) or class definition. class members declared as protected can only be

Section 9 -- bind -- ClassesandObjectsinPHP5 [9]. Section 9 -- in addition to restricting access, the access method also determines which method calls the quilt class or which attribute links the quilt class access. the function call is associated

Section 9 -- in addition to restricting access, binding also determines which method calls the quilt class or which attribute accesses the quilt class. the association between function calls and functions and the relationship between member access

PHP static binding and dynamic binding. read about PHP static binding and dynamic binding. in addition to restricting access, the access method also determines which method calls the quilt class or which attribute accesses the quilt class. the

Zookeeper By inheritance, a new class can be derived from an existing class, and the derived class inherits the features of the base class, including methods. Just as inheriting a property is easier than just starting from scratch, it is usually

  1 virtual is used to enable dynamic binding. In addition to the number of constructors, any non-static member function can be a virtual function. Virtual only appears in the member function declaration of the class and cannot be used in the

1. while (0) Two usage, one is for jump, one is for macro 2. declare that the external variable in the variable uses extern and that the register variable is register. 3. static global variables and static local variables. The difference is that

1. while (0) Two usage, one is for jump, one is for macro 2. declare that the external variable in the variable uses extern and that the register variable is register. 3. static global variables and static local variables. The difference is that