Shulou(Shulou.com)06/03 Report--

Today, I would like to talk to you about what the class is, many people may not know much about it. In order to make you understand better, the editor has summarized the following contents for you. I hope you can gain something according to this article.

Definition:

Class (Class) is the basis of information encapsulation in object-oriented programming (OOP,Object-Oriented Programming). A class is a user-defined reference data type, also called a class type. Each class contains a description of the data and a set of functions that manipulate the data or pass messages. An instance of a class is called an object.

The three main features of the class

1. Encapsulation

Encapsulating the data and operations as an organic whole, because the private members of the class are hidden and only provide limited interfaces to the outside, it can ensure high internal cohesion and low coupling with the outside. Users do not need to know the specific implementation details, but just use the members of the class with specific access rights through the external interface, which can enhance security and simplify programming.

2. Inheritance

Inheritance is more in line with the cognitive law, making the program easier to understand and saving unnecessary repetitive code.

3. Polymorphism

If the same operation acts on different objects, it can have different interpretations and produce different execution results. At run time, methods in the implementation subclass (derived class) can be called through a pointer to the parent class (base class).

Define a class:

Class class name {public: public member private: private member protected: protect member}; after reading the above, do you have any further understanding of what a class is? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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