C# Online Quiz



Following quiz provides Multiple Choice Questions (MCQs) related to C#. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

Answer : A

Explanation

When a value type is converted to object type, it is called boxing.

Q 3 - Which of the following converts a type to a small floating point number in C#?

A - ToInt64

B - ToSbyte

C - ToSingle

D - ToInt32

Answer : C

Explanation

ToSingle() method converts a type to a small floating point number.

Q 4 - Which of the following operator creates a pointer to a variable in C#?

A - sizeof

B - typeof

C - &

D - *

Answer : D

Explanation

* operator creates a pointer to a variable.

Q 5 - Which of the following method helps in returning more than one value?

A - Value parameters

B - Reference parameters

C - Output parameters

D - None of the above.

Answer : C

Explanation

Output parameters method helps in returning more than one value.

Q 6 - Which of the following property of Array class in C# gets a 32-bit integer, the total number of elements in all the dimensions of the Array?

A - Rank

B - LongLength

C - Length

D - None of the above.

Answer : C

Explanation

Length gets a 32-bit integer that represents the total number of elements in all the dimensions of the Array.

Q 7 - Which of the following is the default access specifier of a class member function?

A - Private

B - Public

C - Protected

D - Internal

Answer : A

Explanation

Default access for the class member function is Private.

Answer : D

Explanation

All of the above options are correct.

Q 9 - Which of the following preprocessor directive defines a sequence of characters as symbol in C#?

A - define

B - undef

C - region

D - endregion

Answer : A

Explanation

#define: It defines a sequence of characters, called symbol.

Q 10 - User-defined exception classes are derived from the ApplicationException class in C#?

A - true

B - false

Answer : A

Explanation

User-defined exception classes are derived from the ApplicationException class.

csharp_questions_answers.htm
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