Objects And Classes

Which of the following statements is correct when a class is inherited privately?

A:

Public members of the base class become protected members of derived class.

B:

Public members of the base class become private members of derived class.

C:

Private members of the base class become private members of derived class.

D:

Public members of the base class become public members of derived class.

Answer: B

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What does the class definitions in following code represent?

class Bike
{
    Engine objEng;
};
class Engine
{
    float CC;
};

A:

kind of relationship

B:

has a relationship

C:

Inheritance

D:

Both A and B

Answer: B

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How many objects can be created from an abstract class?

A:

Zero

B:

One

C:

Two

D:

As many as we want

Answer: A

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Which of the following statements about virtual base classes is correct?

A:

It is used to provide multiple inheritance.

B:

It is used to avoid multiple copies of base class in derived class.

C:

It is used to allow multiple copies of base class in a derived class.

D:

It allows private members of the base class to be inherited in the derived class.

Answer: B

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Constructor is executed when _____.

A:

an object is created

B:

an object is used

C:

a class is declared

D:

an object goes out of scope.

Answer: A

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Questions for: Objects And Classes