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

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);
}

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);
        }
    }
}

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();
    }
}

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();
    }
}