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C#

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C# Programming Knowledge Check

Test your knowledge of C# programming concepts with our engaging quiz! Designed for both beginners and seasoned developers, this quiz includes 10 multiple-choice questions that cover a wide range of topics.

Participate to:

Assess your understanding of variable naming conventions
Learn about type conversions and operators
Challenge your knowledge on C# exceptions

10 Questions2 MinutesCreated by CodingEagle493

1 - Which of the following is correct about variable naming conventions in C#?

A - A name must begin with a letter that could be followed by a sequence of letters, digits (0 - 9) or underscore.

B - The first character in an identifier cannot be a digit.

C - Both of the above.

D - None of the above. Show Answer

2 - Value type variables in C# are derived from the class System.ValueType?

A - true

B - false

3 - Which of the following converts a floating point or integer type to a decimal type in C#?

A - ToDecimal

B - ToDouble

C - ToInt16

D - ToInt32

4 - Which of the following converts a type to an unsigned big type in C#?

A - ToType

B - ToUInt16

C - ToUInt32

D - ToUInt64

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.

6 - Which of the following is correct about null coalescing operator in C#?

A - The null coalescing operator is used with the nullable value types and reference types.

B - It is used for converting an operand to the type of another nullable (or not) value type operand, where an implicit conversion is possible.

C - If the value of the first operand is null, then the operator returns the value of the second operand, otherwise it returns the value of the first operand.

D - All of the above.

7 - Which of the following is the correct about class destructor?

A - A destructor is a special member function of a class that is executed whenever an object of its class goes out of scope.

B - A destructor has exactly the same name as that of the class with a prefixed tilde (~) and it can neither return a value nor can it take any parameters.

C - Both of the above.

D - None of the above.

8 - C# supports multiple inheritance.

A - true

B - false

9 - Which of the following preprocessor directive allows generating an error from a specific location in your code in C#?

A - define

B - region

C - line

D - error

10 - Which of the following is true about System.ApplicationException class in C#?

A - The System.ApplicationException class supports exceptions generated by application programs.

B - Exceptions defined by the programmers should derive from this class.

C - Both of the above.

D - None of the above.

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