C# Programming Practice Test 10

1. Which of these is used as default for a member of a class if no access specifier is used for it?

protected

protected internal

private

public

2. What is the process by which we can control what parts of a program can access the members of a class?

Polymorphism

Abstraction

Recursion

Encapsulation

3. Which of these access specifiers must be used for class so that it can be inherited by another subclass?

none of the mentioned

public

both public & private

private

4. What will be the output of the following C# code snippet?

 class UnsafeCode
 {
     unsafe static void Main()
     {
         char[] arr = { 'A', 'B', 'C', 'D', 'E' };
         fixed (char* P = arr)
         {
             int i;
             for (i = 0 ;i < 5 ;i++)
             if (*P % 2 == 0)
             ++*P;
             else
             (*P)++;
             Console.WriteLine(arr);
         }
         Console.ReadLine();
     }
 }

FBCDE

BBCEE

BBDDF

ACCEE

5. Choose the correct way to call subroutine fun() of the sample class?

class a
{
    public void x(int p, double k)
    {
        Console.WriteLine("k : csharp!");
    }
}

   delegate void del(int i);
   x s = new x();
   del d = new del(ref s.x);
   d(8, 2.2f);

all of the mentioned

   x s = new x();
   delegate void d = new del(ref x);
   d(8, 2.2f);

   delegate void del(int p,  double k);
   del d;
   x s = new x();
   d = new del(ref s.x);
   d(8, 2.2f);

6. Which operator is commonly used to find the size of the type of C#?

both size() & sizeof(type)

sizeof(type)

none of the mentioned

size()

7. Consider an integer pointer . *a.++*a will increment ___________ while *a++ will increment __________

value at a, address contained in a

address contained in a, value at a

value at a,value at a

address contained in a, address contained in a

8. A structure pointer points to __________

only to the last member of structure

first two members of structure

first member of structure

whole structure

9. Select the operators used for checking the equality in strings:

10. What will be the output of the following C# code snippet?

 class Program
 {
     static void Main(string[] args)
     {
         String s1 = "CSHARP";
         String s2 = s1.Replace('H','L');
         Console.WriteLine(s2);
         Console.ReadLine();
     }
 }

CSHAP

CSHP

CSHALP

CSHP