Object Oriented Programming Notes Questions with Answers PDF Download - 59

Multiple inheritance leaves room for a derived class to have

1. dynamic members
2. private members
3. public members
4. ambiguous members

A structure can

1. A struct can contain properties.
2. A struct can contain constructors.
3. A struct can contain protected data members.
4. Both a and b

An object that is implementing IDisposable is passed to your class as an argument. Should you wrap the element in a using statement

1. Yes, otherwise a memory leak could happen
2. No, you should call Close on the object.
3. No, you should use a try/finally statement and call Dispose yourself.
4. No, the calling method should use a using statement.

The advantage of using 2D jagged array over 2D rectangular array is

1. Easy initialization of elements
2. that it allows unlimited elements as well as rows which had ?0? or are empty in nature
3. both a and b
4. easy implementation

Select an output for the following code
static void Main(string[] args) { int a = 5; fun1 (ref a); Console.WriteLine(a); Console.ReadLine(); } static void fun1(ref int a) { a = a * a; }

1. 5
2. 0
3. 20
4. 25