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- Question
Which of the following CANNOT be a target for a custom attribute?
Options- A. Enum
- B. Event
- C. Delegate
- D. Interface
- E. Namespace
- Correct Answer
- Namespace
- 1. Which of the following is correct way to convert a String to an int?
String s = "123"; int i; i = (int)s;
String s = "123"; int i; i = int.Parse(s);
String s = "123"; int i; i = Int32.Parse(s);
String s = "123"; int i; i = Convert.ToInt32(s);
String s = "123"; int i; i = CInt(s);
Options- A. 1, 3, 5
- B. 2, 4
- C. 3, 5
- D. 2, 3, 4 Discuss
- 2. How will you complete the foreach loop in the C#.NET code snippet given below such that it correctly prints all elements of the array a?
int[][]a = new int[2][]; a[0] = new int[4]{6, 1 ,4, 3}; a[1] = new int[3]{9, 2, 7}; foreach (int[ ] i in a) { /* Add loop here */ Console.Write(j + " "); Console.WriteLine(); }
Options- A. foreach (int j = 1; j < a(0).GetUpperBound; j++)
- B. foreach (int j = 1; j < a.GetUpperBound (0); j++)
- C. foreach (int j in a.Length)
- D. foreach (int j in i)
- E. foreach (int j in a.Length -1) Discuss
- 3. An Account class has a property called accountNo and acc is a reference to a bank object and we want the C#.NET code snippet given below to work. Which of the following options will ensure this functionality?
acc.accountNo = 10; Console.WriteLine(acc.accountNo);
Options- A. Declare accountNo property with both get and set accessors.
- B. Declare accountNo property with only get accessor.
- C. Declare accountNo property with get, set and normal accessors.
- D. Declare accountNo property with only set accessor.
- E. None of the above Discuss
- 4. Which of the following statements is correct about an interface?
Options- A. One interface can be implemented in another interface.
- B. An interface can be implemented by multiple classes in the same program.
- C. A class that implements an interface can explicitly implement members of that interface.
- D. The functions declared in an interface have a body. Discuss
- 5. Which of the following statements is correct about the C#.NET code snippet given below?
class Trial { int i; Decimal d; } struct Sample { private int x; private Single y; private Trial z; } Sample ss = new Sample();
Options- A. ss will be created on the heap.
- B. Trial object referred by z will be created on the stack.
- C. z will be created on the heap.
- D. Both ss and z will be created on the heap.
- E. ss will be created on the stack. Discuss
- 6. Which of the following snippets are the correct way to convert a Single into a String?
Single f = 9.8f; String s; s = (String) (f);
Single f = 9.8f; String s; s = Convert.ToString(f);
Single f = 9.8f; String s; s = f.ToString();
Single f = 9.8f; String s; s = Clnt(f);
Single f = 9.8f; String s; s = CString(f);
Options- A. 1, 2
- B. 2, 3
- C. 1, 3, 5
- D. 2, 4 Discuss
- 7. What will be the output of the C#.NET code snippet given below?
int num = 1, z = 5; if (!(num <= 0)) Console.WriteLine( ++num + z++ + " " + ++z ); else Console.WriteLine( --num + z-- + " " + --z );
Options- A. 5 6
- B. 6 5
- C. 6 6
- D. 7 7 Discuss
- 8. Which of the following statements is correct?
Options- A. When used as a modifier, the new keyword explicitly hides a member inherited from a base class.
- B. Operator overloading works in different ways for structures and classes.
- C. It is not necessary that all operator overloads are static methods of the class.
- D. The cast operator can be overloaded. Discuss
- 9. Which of the following is the correct ways to set a value 3.14 in a variable pi such that it cannot be modified?
Options- A. float pi = 3.14F;
- B. #define pi 3.14F;
- C. const float pi = 3.14F;
- D. const float pi; pi = 3.14F;
- E. pi = 3.14F; Discuss
- 10. Which of the following statements is correct about the C#.NET program given below if a value "ABCD" is input to it?
using System; namespace CuriousTabConsoleApplication { class MyProgram { static void Main(string[] args) { int index; int vat = 88; int[] a = new int(5]; try { Console.Write("Enter a number: "); index = Convert.Toint32(Console.ReadLine()); a[index] = val; } catch(Exception e) { Console.Write("Exception occurred"); } Console.Write("Remaining program"); } } }
Options- A. It will output: Exception occurred
- B. It will output: Remaining program
- C. It will output: Remaining program Exception occurred
- D. It will output: Exception occurred Remaining program
- E. The value 88 will get assigned to a[0]. Discuss
More questions
Correct Answer: 2, 3, 4
Correct Answer: foreach (int j in i)
Correct Answer: Declare accountNo property with both get and set accessors.
Correct Answer: A class that implements an interface can explicitly implement members of that interface.
Correct Answer: ss will be created on the stack.
Correct Answer: 2, 3
Correct Answer: 7 7
Correct Answer: When used as a modifier, the new keyword explicitly hides a member inherited from a base class.
Correct Answer: const float pi = 3.14F;
Correct Answer: It will output: Exception occurred Remaining program
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