Classes and Objects in C Sharp
practice.

What will be the output of the following C# code?

static void Main(string[] args)
{
    int i = 10;
    double d = 35.78;
    fun(i);
    fun(d);
    Console.ReadLine();
}
static void fun(double d)
{
    Console.WriteLine(d);
}

What will be the Correct statement in the following C# code?

class baseclass
{
    int a;
    public baseclass(int a1) 
    {
        a = a1;
        console.writeline(" a ");
    }
    class derivedclass : baseclass
    {
        public derivedclass (int a1) : base(a1)
        {
            console.writeline(" b ");
        }
    }
    class program
    {
        static void main(string[] args)
        {
            derivedclass d =  new derivedclass(20);
        }
    }
}

The process of defining a method in a subclass having same name & type signature as a method in its superclass is known as?

Wrong statement about enum used in C#.NET is?

What is the return type of destructor?

What will be the output of the following C# code?

class A 
{
    public int i;
    protected int j;
}    
class B : A 
{
    public int j;
    public void display() 
    {
        base.j = 3;
        Console.WriteLine(i + " " + j);
    }
}    
class Program
{
    static void Main(string[] args)
    {
        B obj = new B();
        obj.i = 1;
        obj.j = 2;
        obj.display();     
        Console.ReadLine();
    }
}

Access specifiers which can be used for an interface are?

A class consists of two interfaces with each interface consisting of three methods. The class had no instance data. Which of the following indicates the correct size of object created from this class?

Choose the correct statements among the following:

What will be the output of the following C# code?

class overload
{
    public int x;
    int y;
    public int add(int a)
    {
        x = a + 1;
        return x;
    }
    public int add(int a, int b)
    {
        x = a + 2;
        return x;
    }
}    
class Program
{
    static void Main(string[] args)
    {
        overload obj = new overload();
        overload obj1 = new overload();
        int a = 0;
        obj.add(6);
        obj1.add(6, 2);
        Console.WriteLine(obj.x);
        Console.WriteLine(obj1.x);
        Console.ReadLine();
    }
}

Which reference modifier is used to define reference variable?

What will be the output of the following C# code?

class maths
{
    int i;
    public maths(int x)
    {
        i = x;
        Console.WriteLine(" hello: ");
    }
}
class maths1 : maths
{
    public  maths1(int x) :base(x)
    {
        Console.WriteLine("bye");
    }
}
class Program
{
    static void Main(string[] args)
    {
        maths1 k = new maths1(12);
        Console.ReadLine();
    }
}

"A mechanism that binds together code and data in manipulates, and keeps both safe from outside interference and misuse. In short it isolates a particular code and data from all other codes and data. A well-defined interface controls access to that particular code and data."

To override a method in the subclass, the base class method should be defined as?

Calculate the number of bytes a structure variable s occupies in the memory if it is defined as follows.

class abc
{
    int i;
    Decimal d;
}
struct sample
{
   private int x;
   private Single y;
   private trial z;
}
sample s = new sample();

What is Recursion in CSharp defined as?

What will be the output of the following C# code?

class maths
{
    int i;
    public maths(int ii)
    {
        ii = 12;
        int j = 12;
        int r = ii * j;
        Console.WriteLine(r);
    }
}
class maths1 : maths
{
    public maths1(int u) :base(u)
    {
        u = 13;
        int h = 13;
        Console.WriteLine(u + h);
    }
}
class maths2 : maths1
{
    public maths2(int k) :base(k)
    {
        k = 24;
        int o = 6 ;
        Console.WriteLine(k /o);
    }
}
class Program
{
    static void Main(string[] args)
    {
        maths2 t = new maths2(10);
        Console.ReadLine();
    }
}

Which keyword is used to refer baseclass constructor to subclass constructor?

What will be the output of the following C# code?

class test
{
    public void print()
    {
        Console.WriteLine("Csharp:");
    }
}
class Program
{
    static void Main(string[] args)
    {
        test t;
        t.print();
        Console.ReadLine();
    }
}

Which return statement correctly returns the output?