Quiz 12 In order to use a dynamic_cast<> in a C++ program, runtime type informat

Question

Quiz 12

In order to use a dynamic_cast<> in a C++ program, runtime type information must be enabled.

true

false

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In C++, a call to a virtual method though a base class pointer to a derived class object will use

dynamic binding / dynamic linkage.

automatic binding / static linkage.

static binding / static linkage.

external binding / external linkage.

------------------------

With public inheritance, the protected members of a base class can be accessed by

methods of that base class.

friends of that base class.

methods of any classes derived from that base class.

All of the above.

----------------------

What is the C++ syntax for declaring the class Dog to be a derived class of the base class Pet?

class Pet : public Dog

class Dog : public Pet

class Dog public subclass of Pet

class Dog derived from public Pet

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When a derived class object is destroyed, in what order are the destructors executed?

First the derived class destructor is executed, then the base class destructor is executed.

First the base class destructor is executed, then the derived lass destructor is executed.

Only the base class destructor is executed.

Only the derived class destructor is executed.

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In C++, what is a pure virtual method?

In C++, what is an abstract class?

Assume that Pet is a base class, and Cat is a class derived from Pet using public inheritance. What is the correct way to call the print() method of the Pet class from the print() method of the Cat class?

Cat::print();

super.print();

Pet::print();

base.print();

--------------------------------

When a derived class object is created, in what order are the constructor bodies executed?

First the derived class constructor body is executed, then the base class constructor body is executed.

First the base class constructor body is executed, then the derived class constructor body is executed.

Only the base class constructor body is executed.

Only the derived class constructor body is executed.

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A base class pointer that points to a derived class object can be used to call

only methods declared in the derived class.

only methods declared in the base class.

any method declared in either the base class or the derived class.

any method in any class included in your program.

Explanation / Answer

In order to use a dynamic_cast<> in a C++ program, runtime type information must be enabled. True

In C++, a call to a virtual method through a base class pointer to a derived class object will use dynamic binding / dynamic linkage.

With public inheritance, the protected members of a base class can be accessed by methods of that base class. All of the above.

What is the C++ syntax for declaring the class Dog to be a derived class of the base class Pet? class Dog : public Pet

When a derived class object is destroyed, in what order are the destructors executed? First the derived class destructor is executed, then the base class destructor is executed.

In C++, what is a pure virtual method?

In C++, what is an abstract class?

Assume that Pet is a base class, and Cat is a class derived from Pet using public inheritance. What is the correct way to call the print() method of the Pet class from the print() method of the Cat class? super.print();

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