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- Question
Suppose a Student class has an indexed property. This property is used to set or retrieve values to/from an array of 5 integers called scores[]. We want the property to report "Invalid Index" message if the user attempts to exceed the bounds of the array. Which of the following is the correct way to implement this property?
Options- A.
class Student { int[] scores = new int[5] {3, 2, 4,1, 5}; public int this[ int index ] { set { if (index < 5) scores[index] = value; else Console.WriteLine("Invalid Index"); } } } - B.
class Student { int[] scores = new int[5] {3, 2, 4, 1, 5}; public int this[ int index ] { get { if (index < 5) return scores[ index ]; else { Console.WriteLine("Invalid Index"); return 0; } } set { if (index < 5) scores[ index ] = value; else Console.WriteLine("Invalid Index"); } } } - C.
class Student { int[] scores = new int[5] {3, 2, 4, 1, 5}; public int this[ int index ] { get { if (index < 5) return scores[ index ]; else { Console.WriteLine("Invalid Index"); return 0; } } } } - D.
class Student { int[] scores = new int[5] {3, 2, 4, 1, 5}; public int this[ int index ] { get { if (index < 5) scores[ index ] = value; else { Console.WriteLine("Invalid Index"); } } set { if (index < 5) return scores[ index ]; else { Console.WriteLine("Invalid Index"); return 0; } } } } - Correct Answer
class Student { int[] scores = new int[5] {3, 2, 4, 1, 5}; public int this[ int index ] { get { if (index < 5) return scores[ index ]; else { Console.WriteLine("Invalid Index"); return 0; } } set { if (index < 5) scores[ index ] = value; else Console.WriteLine("Invalid Index"); } } }
- 1. There is no private or protected inheritance in C#.NET.
Options- A. True
- B. False Discuss
- 2. Which of the following is NOT an Arithmetic operator in C#.NET?
Options- A. **
- B. +
- C. /
- D. %
- E. * Discuss
- 3. The space required for structure variables is allocated on stack.
Options- A. True
- B. False Discuss
- 4. Is it possible to invoke Garbage Collector explicitly?
Options- A. Yes
- B. No Discuss
- 5. It possible to create a custom attribute that can be applied only to specific programming element(s) like ____ .
Options- A. Classes
- B. Methods
- C. Classes and Methods
- D. Classes, Methods and Member-Variables Discuss
- 6. C#.NET structures are always value types.
Options- A. True
- B. False Discuss
- 7. What does the following C#.NET code snippet will print?
int i = 0, j = 0; label: i++; j+=i; if (i < 10) { Console.Write(i +" "); goto label; }
Options- A. Prints 1 to 9
- B. Prints 0 to 8
- C. Prints 2 to 8
- D. Prints 2 to 9
- E. Compile error at label:. Discuss
- 8. The [Serializable()] attribute gets inspected at
Options- A. Compile-time
- B. Run-time
- C. Design-time
- D. Linking-time
- E. None of the above Discuss
- 9. Code that targets the Common Language Runtime is known as
Options- A. Unmanaged
- B. Distributed
- C. Legacy
- D. Managed Code
- E. Native Code Discuss
- 10. Which of the following are the correct ways to declare a delegate for calling the function func() defined in the sample class given below?
class Sample { public int func(int i, Single j) { /* Add code here. */ } }
Options- A. delegate d(int i, Single j);
- B. delegate void d(int, Single);
- C. delegate int d(int i, Single j);
- D. delegate void (int i, Single j);
- E. delegate int sample.func(int i, Single j); Discuss
More questions
Correct Answer: True
Correct Answer: **
Correct Answer: True
Correct Answer: Yes
Correct Answer: Classes and Methods
Correct Answer: True
Correct Answer: Prints 1 to 9
Correct Answer: Run-time
Correct Answer: Managed Code
Correct Answer: delegate int d(int i, Single j);
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