C# Enum MCQs

Question 1: What will be the output of the following program?

enum WeekDays
{
    Monday,
    Tuesday,
    Wednesday,
    Thursday,
    Friday,
    Saturday,
    Sunday
}

Console.Write(WeekDays.Monday);

• 0
• 1
• Monday
• Compile-time error

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Question 2: What will be the output of the following program?

enum WeekDays
{
    Monday,
    Tuesday,
    Wednesday,
    Thursday,
    Friday,
    Saturday,
    Sunday
}

Console.Write( (int)WeekDays.Monday);

• 0
• 1
• Runtime error
• Compile-time error

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Question 3: What will be the output of the following program?

enum WeekDays
{
    Monday,
    Tuesday,
    Wednesday,
    Thursday,
    Friday,
    Saturday,
    Sunday
}

var holiday = WeekDays.Sunday;
Console.Write(“{0}, {1}”, holiday, (int) holiday);

• Sunday, 6
• 6, Sunday
• 6, 6
• Compile-time error

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Question 4: The members of the enum are always public, and no access modifiers can be applied.

• True
• False

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Question 5: What will be the output of the following program?

public class Program
{
	public static void Main()
	{
		WeekDays.Sunday = 12;
		Console.Write(WeekDays.Sunday);
	}
}

enum WeekDays
{
    Monday,
    Tuesday,
    Wednesday,
    Thursday,
    Friday,
    Saturday,
    Sunday
}

• 12, Sunday
• 12, 12
• Compile-time error
• Runtime error

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Question 6: An enum cannot be declared inside a method.

• True
• False

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Question 7: Which of the following statements are TRUE?

• Enum is a value type.
• Enum is derived from the Object class.
• The default data type of enum members is int.
• String cannot be used with enum.
• Enum can be declared in a method.

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Question 8: What will be the output of the following program?

public class Program
{
	public static void Main()
	{
		Console.Write((int)Color.Green);
	}
}
enum Color 
{
    Red,
    Green=0,
    Blue=0
}

• Compile-time error
• Runtime error
• 0
• Green

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Question 9: What will be the output of the following program?

public class Program
{
	public static void Main()
	{
		Console.Write((int)Color.Blue);
	}
}
enum Color 
{
    Red,
    Green=4,
    Blue
}

• 0
• 4
• 5
• 6

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Question 10: What will be the output of the following program?

public class Program
{
	public static void Main()
	{
		Console.Write((int)Color.Red);
	}
}
enum Color 
{
    Red = Blue,
    Blue
}

• 1
• 0
• Compile-time error
• Runtime error

Check Answer