How many ways of reusing are there in class hierarchy?

Correct Answer: A conversion constructor declared with the explicit keyword The compiler does not use an explicit constructor to implement an implied conversion of types It?s purpose is reserved explicitly for construction

Correct Answer: 2

Explanation:

There are two formats for initializers in C++ as shown in the example that follows. The first format uses the traditional C notation. The second format uses constructor notation.

int foo = 123;

 

int bar (123);

Correct Answer: A reference variable provides an alias to a previously defined variable Data type & reference-name = variable name

Correct Answer: The C++ programming technique allows defining user defined datatypes through structure The syntax to declare structure is as follows: struct student { char name[100] char address[250] };

Correct Answer: A function prototype is a declaration of a function that omits the function body It specifies the function?s name, argument types and return type Eg int add(int,int)

Correct Answer: A function is limited to throwing only a specified list of exceptions.

Explanation:

C++ provides a mechanism to ensure that a given function is limited to throwing only a specified list of exceptions. It is called as exception specification.

Correct Answer: ellipses operator

Explanation:

The ellipses operator can be represented as (?).

Correct Answer: Polymorphic

Explanation:

RTTI is available only for classes which are polymorphic, which means they have at least one virtual method.

Correct Answer: Dynamic arrays

Explanation:

Vectors are sequence containers representing arrays that can change in size.

Correct Answer: Iterators