Classes and Objects in C Sharp
practice.

When we call a constructor method among different given constructors. We match the suitable constructor by matching the name of constructor first, then the number and then the type of parameters to decide which constructor is to be overloaded. The process is also known as?

Which method has the same name as that of its class?

Wrong statement about run time polymorphism is?

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

class recursion 
{
    int fact(int n) 
    {
        int result;
        if (n == 1)
        return 1;
        result = fact(n - 1) * n;
        return result;
    }
} 
class Program 
{
    public static void main(String args[]) 
    {
        recursion obj = new recursion() ;
        Console.WriteLine(obj.fact(4));
    }
}

Which of the following statements are correct?

Correct statement about constructors in C#.NET is?

Which of the following modifiers is used when an abstract method is redefined by a derived class?

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

static void Main(string[] args)
{
    int[] arr = new int[] {1, 2, 3, 4, 5};
    fun1(ref arr);
    Console.ReadLine();
 }
static void fun1(ref int[] array)
{
    for (int i = 0; i < array.Length; i++)
    {
        array[i] = array[i] + 5;
        Console.WriteLine(array[i] + " ");
    }
}

Choose the correct statement among the below mentioned statements.

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

static void Main(string[] args)
{
   int a = 5;
   fun1 (ref a);
   Console.WriteLine(a);
   Console.ReadLine();
}
static void fun1(ref int a)
{
    a = a * a;
}

Correct way to define object of sample class in which C# code will work correctly is:

class abc
{
    int i;
    float k;
    public abc(int ii, float kk)
    {  
        i = ii;
        k = kk;
    }
}

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

class maths
{
    public int fun(int k, int y)
    {
        return k + y;
    }
    public int fun1(int t, float z)
    {
        return (t+(int)z);
    }
}    
class Program
{
    static void Main(string[] args)
    {
        maths obj = new maths();
        int i;
        int b = 90;
        int c = 100;
        int d = 12;
        float l = 14.78f;
        i = obj.fun(b, c);
        Console.WriteLine(i);
        int j = (obj.fun1(d,  l));
        Console.WriteLine(j);
        Console.ReadLine();
    }
}

Select the correct statement from the following?

The method called by clients of a class to explicitly release any resources like network, connection, open files etc. When the object is no longer required?

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

static void Main(string[] args)
{
    int i = 5;
    int j  = 6;
    add(ref i);
    add(6);
    Console.WriteLine(i);
    Console.ReadLine();
}
static void add(ref int x)
{
    x = x * x;
}
static void add(int x)
{
    Console.WriteLine(x * x * x);
}

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

class sample
{
    public int i;
    public int j;
    public void fun(int i, int j)
    {
        this.i = i;
        this.j = j;
    }
}
class Program
{
    static void Main(string[] args)
    {
        sample s = new sample();
        s.i = 1;
        s.j = 2;
        s.fun(s.i, s.j);
        Console.WriteLine(s.i + " " + s.j);
        Console.ReadLine();
    }
}

What will be size of the object created depicted by C# code snippet?

class baseclass
{
    private int a;
    protected int b;
    public int c;
}
class derived : baseclass
{
    private int x;
    protected int y;
    public int z;
}
class Program
{
    static Void Main(string[] args)
    {
        derived a = new derived();
    }
}

Correct way to define operator method or to perform operator overloading is?

When a function fun() is to receive an int, a single & a double and it is to return a decimal, then the correct way of defining this C# function is?

Which of the following statements is correct about constructors in C#.NET?