C# MCQs (Chapterwise Multiple Choice Questions)

Will the following code compile? public class CustomClass : IDisposable { }

No

Yes

Answer & Explanation

Correct Answer: No

Note: This Question is unanswered, help us to find answer for this one

Applications written in C# require the .NET framework...

to be installed on the machine running the application.

and the Visual Studio compiler to be installed on the machine running the application.

all of these

Answer & Explanation

Correct Answer: to be installed on the machine running the application.

Note: This Question is unanswered, help us to find answer for this one

Which of the following is the correct way to specify a decimal

float d = 0.00;

long d = 0.00;

int d = 0.00;

None of these

decimal d = 0.00;

Answer & Explanation

Correct Answer: None of these

Note: This Question is unanswered, help us to find answer for this one

Choose the method defined by MemberInfo:

GetCustomAttributes()

IsDefined()

GetCustomeAttributesData()

All of the above

Answer & Explanation

Correct Answer: All of the above

Note: This Question is unanswered, help us to find answer for this one

Polymorphism. LET: public class BaseClass { public virtual string DoWork() { return "A"; } } public class DerivedClass : BaseClass { public override string DoWork() { return "B"; } } IF: DerivedClass B = new DerivedClass(); BaseClass A = (BaseClass)B; A.DoWork(); What's the expected output?

The code won't compile

B

A

Answer & Explanation

Correct Answer: B

Note: This Question is unanswered, help us to find answer for this one

What does the following code do? string a = "hello"; string b = null; string c = a + b; Console.WriteLine(c);

It outputs "hello"

It does not compile

It outputs "c"

It throws a NullReferenceException

It outputs "a + b"

Answer & Explanation

Correct Answer: It outputs "hello"

Note: This Question is unanswered, help us to find answer for this one

you can use the ____ method to accept user input from the keyboard.

ReadLine()

NextLine()

Input()

Next()

Answer & Explanation

Correct Answer: ReadLine()

Note: This Question is unanswered, help us to find answer for this one

In the following array instantiation: string[] names = new string[2]; , how many items can the array hold?

1

3

0

2

Answer & Explanation

Correct Answer: 2

Note: This Question is unanswered, help us to find answer for this one

What happens with the following lines? #region Debug [block of code HERE] #endregion

The entire block of code is commented.

The entire block of code is executed just in debug mode.

You can visually expand or collapse the block of code.

Answer & Explanation

Correct Answer: You can visually expand or collapse the block of code.

Note: This Question is unanswered, help us to find answer for this one

What does if((number <= 10) && (number >= 0)) evaluate to if number is -6?

True

False

Answer & Explanation

Correct Answer: False

Note: This Question is unanswered, help us to find answer for this one

C# Quick Quiz

Poor Results!

You need a lot of improvement.

Just don't give up!

Correct Answers: 0/10

Start Practicing with our MCQs given below.