What does class mean in c++

In C, the class keyword defines a class that represents the template of an object. A class includes data members (properties), member functions (methods), constructors (called when an object is created), and destructors (called when an object is destroyed). To use a class, you create an object and then access the members of the class through the object.

The meaning of class in C

In C, the class keyword is used For defining a class, a class is a template that represents an object, which is a set of data structures with the same properties and methods.

Components of a class

A class usually contains the following parts:

• Data members:Represents the class Property or state.
• Member function: Define the behavior or method of the class.
• Constructor: Special function called when creating an object of a class.
• Destructor: Special function called when destroying objects of a class.

The syntax of the class

The syntax of the class is as follows:

<code class="cpp">class class_name {
    // 数据成员
    // 成员函数
};</code>

Usage of the class

To use a class, you need to create an object of the class first, and then you can access the members of the class through the object:

<code class="cpp">class Person {
    // 数据成员
    string name;
    int age;

    // 成员函数
    void printInfo() {
        cout << "Name: " << name << ", Age: " << age << endl;
    }
};

int main() {
    // 创建对象
    Person person;

    // 访问数据成员
    person.name = "John";
    person.age = 30;

    // 调用成员函数
    person.printInfo();

    return 0;
}</code>

Output:

<code>Name: John, Age: 30</code>

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