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

Learn Classes and Objects in C Sharp MCQ Questions and answers with easy and logical explanations in C# Program. Classes and Objects in C Sharp MCQ question provides all type of technical mcq questions which is important for technical exams, campus exams and other entrance examination. Page-4 section-3

Each section contains 100 MCQs on Classes and Objects in C Sharp .
31
Wrong statement about inheritance in C# .NET?
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Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
32
Correct way of declaration of object of the following class is?
class name
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Answer & Solution
Answer: Option A
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33
Select the sequence of execution of function f1(), f2() & f3() in C# .NET CODE?
class base
{
    public void f1() {}
    public virtual void f2() {}
    public virtual  void f3() {}
}
class derived :base
{
    new public void f1() {}
    public override void f2() {}
    public new void f3() {}
} 
class Program
{
    static void Main(string[] args)
    {
        baseclass b = new derived();
        b.f1 ();
        b.f2 ();
        b.f3 ();
    }
}
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Answer & Solution
Answer: Option B
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34
The following C# code is run on single level of inheritance. What will be the Correct statement in the following C# code?
class sample
{
    int i = 10;
    int j = 20;
    public void display() 
    {
        Console.WriteLine("base method ");
    }
}    
class sample1 : sample 
{
    public  int s = 30;
}    
class Program
{
    static void Main(string[] args)
    {
        sample1 obj = new sample1();
        Console.WriteLine("{0}, {1}, {2}", obj.i,  obj.j,  obj.s);
        obj.display();
        Console.ReadLine();
    }
}
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Answer & Solution
Answer: Option C
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35
What is the return type of constructors?
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Answer & Solution
Answer: Option D
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36
Which keyword is used for correct implementation of an interface in C#.NET?
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Answer & Solution
Answer: Option A
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37
What will be the output of the following C# code?
public static void Main(string[] args)
{
    p();
    void p()
    {
        Console.WriteLine("hi");
    }
}
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Answer & Solution
Answer: Option A
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38
Can the method add() be overloaded in the following ways in C#?
public int add()  {    }
public float add(){    }
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Answer & Solution
Answer: Option B
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