C# Programming Mock Test 3

10%

Question 1 of 10

1. Which statement is correct about following C# code?

int[, ]a={{5, 4, 3},{9, 2, 6}};

a.GetUpperBound(0) gives 2

a.GetUpperBound(0) gives 9

'a' represents rectangular array of 2 columns and 3 arrays

'a' represents 1-D array of 5 integers

Question 1 of 10

Question 2 of 10

2. Which is the correct way of defining and initializing an array of 3 integers?

int[] a={78, 54};

   int[] a;
   a = new int[3];
   a[1] = 78;
   a[2] = 9;
   a[3] = 54;

   int[] a;
   a = new int[3]{78, 9, 54};

   int[] a;
   a = new int{78, 9, 54};

Question 2 of 10

Question 3 of 10

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

 
 static void Main(string[] args)
 {
     string s1 = "Hello I Love Csharp ";
     Console.WriteLine(Convert.ToChar( (s1.IndexOf('I') - s1.IndexOf('l')) * s1.IndexOf('p'));
     Console.ReadLine();
 }

Hello I

Love

Question 3 of 10

Question 4 of 10

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

 
    static void Main(string[] args)
    {
        int x = 4 ,b = 2;
        x -= b/= x * b;
        Console.WriteLine(x + " " + b);
        Console.ReadLine();
    }

4 0

4 2

2 2

0 4

Question 4 of 10

Question 5 of 10

5. 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?

Dispose()

Finalize()

End()

Close()

Question 5 of 10

Question 6 of 10

6. Correct way to convert a string to uppercase using string class method()?

None of the mentioned

ToUpper()

Upper()

Object.ToUpper()

Question 6 of 10

Question 7 of 10

7. Which among the following is the correct statement: Constructors are used to?

construct the data members

initialize the objects & construct the data members

initialize the objects

none of the mentioned

Question 7 of 10

Question 8 of 10

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

  
static void Main(string[] args)
{
    Mul();
    m();
    Console.ReadLine();
}
static void Mul()
{
    Console.WriteLine("4");
}
static void m()
{
    Console.WriteLine("3");
    Mul();
}

3 4 4

4 3 4

4 3 3

4 4 3

Question 8 of 10

Question 9 of 10

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

static void Main(string[] args)
{
    String c = "Hello";
    String a ;
    a = c.Replace('l', 'w');
    Console.WriteLine(a);
    Console.ReadLine();
}

Helwo

Hewwo

Hewlo

Helloll

Question 9 of 10

Question 10 of 10

10. Can the method add() be overloaded in the following ways in C#?

public int add()  {    }
public float add(){    }

True

False

Question 10 of 10