Advanced C# Concepts

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Questions and Answers

Which of the following is an example of an access modifier in C#?

  • c) Abstract
  • d) Static
  • b) Final
  • a) Public (correct)

Which of the following is NOT a valid data type in C#?

  • b) Char
  • c) String (correct)
  • a) Int
  • d) Bool

Which of the following is true about the 'finally' block in C#?

  • c) It is optional and not necessary in try-catch-finally statements
  • d) It is used to handle exceptions
  • a) It is executed before the 'catch' block
  • b) It is executed only if an exception occurs (correct)

Which of the following is NOT a feature of C#?

<p>Multiple inheritance (C)</p> Signup and view all the answers

Which of the following is true about the 'finally' block in C#?

<p>It is executed regardless of whether an exception is thrown or not (D)</p> Signup and view all the answers

Which of the following is true about the 'var' keyword in C#?

<p>It is used to declare a variable with a specific type inferred by the compiler (B)</p> Signup and view all the answers

Flashcards

What is the 'public' access modifier?

An access modifier that allows unrestricted access to a class member.

What is the correct data type for text?

A sequence of characters; the correct data type is 'string' (lowercase 's').

When is the 'finally' block executed?

The 'finally' block in C# is ALWAYS executed, regardless of whether an exception is thrown or not. It is used for cleanup code.

Does C# support multiple inheritance?

C# does not support multiple inheritance directly, but it can be achieved through interfaces.

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What does the 'var' keyword do?

The 'var' keyword tells the compiler to automatically infer the variable's type based on the assigned value.

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Study Notes

Access Modifiers in C#

  • public, private, protected, internal, and protected internal are examples of access modifiers in C#.

Data Types in C#

  • There is no variant data type in C#.

The 'finally' Block in C#

  • The finally block is used to execute code regardless of whether an exception is thrown or not.
  • The finally block is always executed, even if an exception is thrown.

Features of C#

  • C# does not support multiple inheritance.

The 'var' Keyword in C#

  • The var keyword is used to implicitly type variables.
  • The var keyword is strongly typed.

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