C# Quiz: Test Your Knowledge

Welcome to the C# Quiz on The Coding College! Are you ready to test your understanding of C# concepts? This interactive quiz is designed to help you evaluate your knowledge and identify areas to improve.

Quiz Instructions

  • Each question has one or more correct answers.
  • Read each question carefully before answering.
  • For every correct answer, award yourself a point.
  • Check the answer key provided at the end.

C# Quiz Questions

Beginner Level

  1. What does the following C# statement do?
Console.WriteLine("Hello, World!");
  1. A) Declares a variable
  2. B) Displays “Hello, World!” on the console
  3. C) Accepts input from the user
  4. D) Compiles the program
  1. Which data type is used to store true or false values in C#?
    • A) int
    • B) bool
    • C) string
    • D) char
  1. What is the correct way to declare a variable in C#?
    • A) var name = “John”;
    • B) name: string = “John”;
    • C) let name = “John”;
    • D) declare name = “John”;
  1. What is the purpose of a namespace in C#?
    • A) To define methods
    • B) To organize code and prevent naming conflicts
    • C) To compile the code
    • D) To allocate memory
  1. Which of the following is NOT a valid loop in C#?
    • A) while
    • B) for
    • C) foreach
    • D) repeat

Intermediate Level

  1. What is the output of the following code?
int x = 5;
int y = 10;
Console.WriteLine(x + y);
  1. A) 15
  2. B) 510
  3. C) Compilation error
  4. D) Runtime error
  1. How do you handle exceptions in C#?
    • A) Using try and catch blocks
    • B) Using if statements
    • C) Using loop statements
    • D) Using namespace
  1. What keyword is used to inherit a class in C#?
    • A) extends
    • B) inherits
    • C) base
    • D) :
  1. What is the purpose of the static keyword in C#?
    • A) It declares a constant variable.
    • B) It indicates that a class cannot be instantiated.
    • C) It defines a member that belongs to the type itself rather than an instance.
    • D) It makes a method private.
  1. What is the output of this code?
string name = "John";
Console.WriteLine($"Hello, {name}!");
  1. A) Hello, John!
  2. B) Hello, {name}!
  3. C) Hello, name!
  4. D) Compilation error

Advanced Level

  1. Which of the following is an example of method overloading in C#?
    • A) Two methods with the same name but different parameters
    • B) A method calling another method
    • C) A base class and a derived class sharing the same method name
    • D) A method with no parameters
  1. What is the purpose of the abstract keyword in C#?
    • A) To define a method without implementation
    • B) To implement an interface
    • C) To create a private method
    • D) To declare a variable
  1. What does the var keyword do in C#?
    • A) Declares a variable with a specific data type
    • B) Declares a variable with an inferred data type
    • C) Declares a constant variable
    • D) Declares a global variable
  1. What is LINQ used for in C#?
    • A) To link multiple files
    • B) To query data from various sources like collections, databases, and XML
    • C) To create a user interface
    • D) To handle exceptions
  1. Which of these is true about C# interfaces?
    • A) An interface can contain implementation.
    • B) A class can implement multiple interfaces.
    • C) An interface can inherit from a class.
    • D) An interface cannot have properties.

Answer Key

  1. B
  2. B
  3. A
  4. B
  5. D
  6. A
  7. A
  8. D
  9. C
  10. A
  11. A
  12. A
  13. B
  14. B
  15. B

How Did You Score?

  • 1–5: You’re just starting! Keep practicing with our C# tutorials on The Coding College.
  • 6–10: Great job! You have a good understanding of C#.
  • 11–15: Excellent! You’re well on your way to mastering C#.

Conclusion

Quizzes are a fun and interactive way to test your knowledge. Share your score with us and keep learning! For more quizzes, tutorials, and exercises, visit The Coding College and stay ahead in your programming journey. 🚀

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