Delegates and Events in C Sharp MCQ question and answer with solution | C# Program MCQs

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61.
What will be the output of the following C# code snippet?
public class Generic<T>
{
    Stack<T> stk = new Stack<T>();
    public void push(T obj)
    {
        stk.Push(obj);
    }
    public T pop()
    {
        T obj = stk.Pop();
        return obj;
    }
}
class Program
{
    static void Main(string[] args)
    {
        Generic<string> g = new Generic<string>();
        g.push(40);
        Console.WriteLine(g.pop());
        Console.ReadLine();
    }
}

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62.
Choose the statements which makes delegate in C#.NET different from a normal class?

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63.
Which of the following is an incorrect statement about delegate?

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64.
Which of the following is the correct way to call the function abc() of the given class in the following C# code?
class csharp
{
    public int abc(int a)
    {
        Console.WriteLine("A:Just do it!");
        return 0;
    }
}

delegate void del(int a);
csharp s = new csharp();
del d = new del(ref s.abc);
d(10);

csharp s = new csharp();
delegate void d = new del(ref abc);
d(10);

delegate int del(int a);
del d;
csharp s = new csharp();
d = new del(ref s.fun);
d(10);

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65.
Suppose a Generic class called as SortObjects is to be made capable of sorting objects of any type(integer, single, byte etc). Then, which of the following programming constructs is able to implement the comparison function?

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66.
What will be the output of the following C# code?
public class Generic<T>
{
    public T Field;
}
class Program
{
    static void Main(string[] args)
    {
        Generic<int> g2 = new Generic<int>();
        Generic<int> g3 = new Generic<int>();
        g2.Field = 8;
        g3.Field = 4;
        if (g2.Field % g3.Field == 0)
        {
            Console.WriteLine("A");
        }
        else
        Console.WriteLine("Prints nothing:");
        Console.ReadLine();
    }
}

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67.
Which statement is valid for the following C# code snippet?
public class Generic<T>
{
    public T Field;
}
class Program
{
    static void Main(string[] args)
    {
        Generic<String> g = new Generic<String>();
        g.Field = "Hi";
        Console.WriteLine(g.Field);
    }
}

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68.
Which of the following are the correct statements about delegates?

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69.
What will be the output of the following C# code snippet?
{
    delegate string F(string str);
    class sample
    {
        public static string fun(string a)
        {
            return a.Replace(',''-');
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            F str1 = new F(sample.fun);
            string str = str1("Test Your c#.NET skills");
            Console.WriteLine(str);
        }
    }
}

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