What is the difference between public, private, and protected?

Question

When and why should I use public, private, and protected functions and variables inside a class? What is the difference between them?<

Answer 1

Public: is a default state when you declare a variable or method, can be accessed by anything directly to the object.

Protected: Can be accessed only within the object and subclasses.

Private: Can be referenced only within the object, not subclasses.