What is the definition of class in c++

What is the definition of class in c?

It is to define data of a class type. Class type is a significant feature of C language. , which is not available in C language.

For example, a class is equivalent to the type we talk about in real life. For example, if we define the class "people", then people include men and women; or they can be seen as including the elderly, adults, and children; or they can be seen as Including good guys and bad guys. etc. . .

The same is true in C language. To define a class Class is to define a class of different data objects with common characteristics. This object is called a data member, and the function that operates on this data member is called a member function. That's it. , they are combined to form an abstract data type, a class type.

In short, a class is an abstraction of the common properties and operations of a group of objects. Classes represent generality, while each object of a class represents specificity.

为了在程序中创建对象，首先必须定义类。C++语言用保留字class定义一个类，一般形式为：
class 类名
{
public:
<共有数据和函数>
protected:
<保护数据和函数>
private:
<私有数据和函数>
}；
这就是类的定义

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