constructor destructor

The prototype of the known class string is: Class string { Public: String (const char * STR = NULL); // common Constructor String (const string & other); // copy the constructor ~ String (void); // destructor String & operator = (const string &

Yesterday I saw an interview with the moto company with the following questions: # Include Using namespace STD; Class human { Public: Human () { Human_num ++; } Static int human_num;         ~ Human () { Human_num --; Print (); } Void print ()

Turn from: http://www.kuqin.com/language/20120723/323076.html In the process of reading "effective C + +" This book, I have countless times to send a sigh, this his mother wrote too good, a sentence on the nail, directly to the point. So I decided

ArticleDirectory 1. Which class member functions are generated by C ++ hollow classes by default? 2. Can there be constructor, destructor, and member functions in the structure? If yes, what is the difference between the structure and

Item 26: variable definitions (variable definition) is postponed whenever possible) By Scott Meyers Translator: fatalerror99 (itepub's nirvana) Release: http://blog.csdn.net/fatalerror99/ If you define a variable with a constructor (constructor) or

1. When will the compiler generate appropriate special default functions for the class? When the statement is as follows: Class ca {}; C ++ compilation is generally used to generate five functions silently behind the scenes: default constructor,

How does an object create a constructor, a destructor that is declared private and protected? The constructor cannot be called from the outside, but the object must be constructed, how it should be resolved, please help us explain, about the

In terms of syntax, a function is declared as protected or private, so this function cannot be called directly from the "external. For protected functions, other functions of the subclass can be called. Private functions can only be called by other

A complete PHP class contains seven types of syntax descriptions, and php class seven types of syntax. A complete PHP class contains seven syntax descriptions, seven syntax descriptions in seven php syntax classes-attribute-static

  When it comes to object-oriented, the first response should be its three major features: encapsulation, inheritance, and polymorphism. Let's take a brief look at these three features:   (1) Encapsulation: encapsulate objective things into abstract

  Another feature of the type that requires the virtual destructor is that the type has pointer members or reference members. If there are pointer and reference members, this type usually requires destructor and copy operations.       Generally, a

Reading Notes Objective c ++ Item 26: postpone variable definition as much as possible.1. defining variables will cause constructor and destructor overhead Whenever you define a type of variable: when the control flow reaches the definition point of

Basic programming skills for C ++/C programmers.1. Enter the if statement for BOOL, float, and comparison between pointer variables and "zero value. (10 points) Tip: here, the "zero value" can be 0, 0.0, false, or "Null Pointer ". For example, the

Chapter 2 class constructor, destructor, and assignment functionConstructors, destructor, and assignment functions are the most basic functions of each class. They are so common that they are easy to paralyze. In fact, these seemingly simple

1. Why do I need to define a virtual destructor? If oneClass with the virtual function, it needs a virtual destructorFor the following reasons:1) if a class has a virtual function, it is often used as a base class;2) if it is a base class, Its

How can I create an object if I declare the constructor and destructor as private and protected? The constructor cannot be called from the outside, but the object must be constructed. How can this problem be solved, when the Destructor is declared

ObjectiveFor a class, the most basic three-class member functions are: constructors, destructors, and copy functions (copy constructors and = overloaded functions). Even if your class does not define these functions, C + + will automatically be

1, the definition of the destructor functionDestructors (destructor), in contrast to constructors, perform destructors automatically when an object ends its lifecycle (for example, the function where the object is called) is completed. Destructors

This chapter shows you how to create a common background class for use in the game. This chapter includes: 4 types of backgrounds How to add a background to the game engine how to use an animated background with animated sprite to simulate an

What is a class 1-1 development of the programming 1-2 process-oriented to object orientation Definition of Class 1-3 1-4 Constructor destructor Two memory management