C++ access specifiers

In C++, access specifiers are used to implement the encapsulation feature of OOP. They are used to set the visibility of class members (variables, functions, etc.). There are three types of access specifiers:

1. Public: Members declared as public are accessible from any part of the program.

2. Private: Members declared as private are only accessible within the class they are declared. They are not accessible from any other part of the program.

3. Protected: Members declared as protected are accessible within the same class and also in the classes derived from that class.

Here is a simple example:

class MyClass {
  public:
    int publicVar; // This can be accessed from anywhere

  private:
    int privateVar; // This can only be accessed within MyClass

  protected:
    int protectedVar; // This can be accessed within MyClass and any class derived from MyClass
};

In this example, publicVar can be accessed from any part of the program, privateVar can only be accessed within MyClass, and protectedVar can be accessed within MyClass and any class derived from MyClass.