Exam Questions Introduction To Classes Chapter 13 9e

Starting Out with C++ from Control Structures to Objects, 9e (Gaddis)

Chapter 13 Introduction to Classes

TRUE/FALSE

1. Whereas object-oriented programming centers on the object, procedural programming centers on functions.

2. Class objects can be defined prior to the class declaration.

3. The constructor function may not accept arguments.

4. A destructor function can have zero to many parameters.

5. More than one constructor function may be defined for a class.

6. More than one destructor function may be defined for a class.

7. You can use the technique known as a member intialization list to initialize members of a class.

8. In-place member initialization no longer is available in C++11.

9. In object-oriented programming, the object encapsulates both the data and the functions that operate on the data.

10. You must declare all data members of a class before you declare member functions.

11. You must use the private access specification for all data members of a class.

12. A private member function is useful for tasks that are internal to the class but it is not directly called by statements outside the class.

13. If you do not declare a destructor function, the compiler will furnish one automatically.

14. When an object is defined without an argument list for its constructor, the compiler automatically calls the object's default constructor.

15. Constructor functions are often used to allocate memory that will be needed by the object.

16. Destructor functions are often used to free memory that was allocated by the object.

17. While a class's member functions may be overloaded, the constructor cannot be overloaded.

18. When using smart pointers to dynamically allocate objects in C++ 11, it is unnecessary to delete the dynamically allocated objects because the smart pointer will automatically delete them.

MULTIPLE CHOICE

1. Objects are created from abstract data types that encapsulate __________ and __________ together.

2. In OOP terminology, an object's member variables are often called its __________ and its member functions can be referred to as its behaviors or its __________.

3. A C++ class is similar to a(n)

4. Where are class declarations usually stored?

5. In a procedural program you typically have __________ stored in a collection of variables and a set of __________ that perform operations on the data.

6. A class is a(n) __________ that is defined by the programmer.

7. Examples of access specifiers are the key words

8. Which of the following is used to protect important data?

9. Which of the following is a directive used to create an "include guard" that allows a program to be conditionally compiled to prevent a header file from accidentally being included more than once?

10. When the body of a member function is defined inside a class declaration, it is said to be

11. A __________ is a member function that is automatically called when a class object is __________.

12. The constructor function's return type is

13. The destructor function's return type is

14. When a constructor function accepts no arguments, or does not have to accept arguments because of default arguments, it is called a(n)

15. When a constructor has a member initialization list, the initializations take place

16. In C++11 you can use __________ to initialize a member variable in its declaration statement.

17. The type of member function that may be called from a statement outside the class is

18. If you do not declare an access specification, the default for members of a class is

19. Members of the class object are accessed with the

20. Assuming that Rectangle is a class name, what can you say is true, given the following statement?

Rectangle *BoxPtr;

21. When you dereference an object pointer, use the

22. Which type of member function may only be called from a function that is a member of the same class?

23. The constructor function always has the same name as

24. Which of the following is automatically called when an object is destroyed?

25. How many default constructors can a class have?

26. Objects in an array are accessed with __________.

27. The process of object-oriented analysis can be viewed as the following steps:

28. When a member function is defined outside of the class declaration, the function name must be qualified with the

29. If a local variable and a global variable have the same name within the same program, the __________ resolution operator must be used.

30. For the following code, which statement is not true?

class Point

{

private:

double y;

double z;

public:

double x;

};

31. The following code shows an example of __________

class Point

{

private:

double y = 5.70;

double z = 3.0;

public:

Public member functions go here...

};

32. In C++11 you can have one constructor call another constructor in the same class by using

33. Assume that myCar is an instance of the Car class and that the Car class has a member function named accelerate. Which of the following is a valid call to the accelerate member function?

34. What is the output of the following program?

#include <iostream>

using namespace std;

class TestClass

{

public:

TestClass(int x)

{ cout << x << endl; }

TestClass()

{ cout << "Hello!" << endl; }

};

int main()

{

TestClass test;

return 0;

}

35. What is the output of the following program?

#include <iostream>

using namespace std;

class TestClass

{

public:

TestClass(int x)

{ cout << x << endl; }

TestClass()

{ cout << "Hello!" << endl; }

};

int main()

{

TestClass test(77);

return 0;

}

36. What is the output of the following program?

#include <iostream>

using namespace std;

class TestClass

{

private:

int val;

void showVal()

{ cout << val << endl; }

public:

TestClass(int x)

{ val = x; }

};

int main()

{

TestClass test(77);

test.showVal();

return 0;

}