Question

What are the access modifiers available for variables in C#? (Select all that apply)

a) public
b) private
c) protected
d) internal

Answer 1

In C#, variables can have one of four access modifiers: public, private, protected, or internal, each specifying different levels of accessibility.

Step-by-step explanation:

The access modifiers available for variables in C# are:

• public
• private
• protected
• internal

Each modifier has a different level of accessibility:

• Public - The variable is accessible from any other class.
• Private - The variable is only accessible within its class.
• Protected - The variable is accessible within its class and by derived classes.
• Internal - The variable is accessible within its assembly, but not from another assembly.

Public:

• Variables marked as public are accessible from any other class or assembly.
• They have the widest scope of accessibility.

Code- public int PublicVariable;

Private:

• Variables marked as private are only accessible within the same class.
• They are encapsulated within the class to restrict external access.

Code- private int PrivateVariable;

Protected:

• Variables marked as protected are accessible within the same class and its derived classes (subclasses).
• They support the concept of inheritance and are useful for providing controlled access to derived classes.

Code- protected int ProtectedVariable;

Internal:

• Variables marked as internal are accessible only within the same assembly.
• They provide a level of abstraction within the assembly.

Code- internal int InternalVariable;