Classes and Objects in C Sharp MCQ question and answer with solution | C# Program MCQs

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2.
Which of the following statements is correct?

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3.
Which statements are correct?

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5.
What will be the output of the following C# code?
namespace ConsoleApplication4
{
    public abstract class A
    {
        public int i = 7;
        public abstract void display();
    }    
    class B: A 
    {
        public int j;
        public override void display() 
        {
            Console.WriteLine(i);
            Console.WriteLine(j);
        }
    }    
    class Program
    {
        static void Main(string[] args)
        {
            B obj = new B();
            A obj1 = new B();
            obj.j = 1;
            obj1.i = 8;
            obj.display();
            Console.ReadLine();
        }
    }
}

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6.
What does the following C# code imply?
csharp abc;
abc = new charp();

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7.
Choose the correct statements about enum used in C#.NET?

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8.
What will be the output of the following C# code?
 class A 
 {
     public virtual void display() 
     {
         Console.WriteLine("A");
     }    
 }    
 class B: A 
 {
    public override void display() 
    {
        Console.WriteLine(" B ");
    } 
 }    
class Program
{
    static void Main(string[] args)
    {
        A obj1 = new A();
        B obj2 = new B();
        A r;
        r = obj1;
        r.display();
        r = obj2;
        r.display();     
        Console.ReadLine();
    }
}

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9.
Which is the correct way to create an object of the given class abc?

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10.
Which of these is not a correct statement?

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