Question 1

Enumeration constants:

Accepted Answer

A)  Must have unique integer values. 
B)  Can be assigned other values once they've been defined. 
C)  Must have unique identifiers. 
D)  Are declared using the keyword const. 
A)  Must have unique integer values. 
B)  Can be assigned other values once they've been defined. 
C)  Must have unique identifiers. 
D)  Are declared using the keyword const. C

Question 2

Which of the following expressions returns the trigonometric sine of x?

Accepted Answer

A)  sin(x). 
B)  sine(x). 
C)  trig_sin(x). 
D)  trig_sine(x). 
A)  sin(x). 
B)  sine(x). 
C)  trig_sin(x). 
D)  trig_sine(x). A

Question 3

If the function int volume(int x = 1, int y = 1, int z = 1); is called by the expression volume(3), how many default arguments are used?

Accepted Answer

A)  None. 
B)  One. 
C)  Two. 
D)  Three. 
A)  None. 
B)  One. 
C)  Two. 
D)  Three. C

Question 4

Which of the following is true?

Accepted Answer

A)  C++ does not provide any capabilities for generating random numbers that cannot be predicted. 
B)  C++11 provides random number capabilities that can produce nondeterministic random numbers-a set of random numbers that can't be predicted. 
C)  Random numbers produced by the rand function are nondeterministic. 
D)  None of the above. 
A)  C++ does not provide any capabilities for generating random numbers that cannot be predicted. 
B)  C++11 provides random number capabilities that can produce nondeterministic random numbers-a set of random numbers that can't be predicted. 
C)  Random numbers produced by the rand function are nondeterministic. 
D)  None of the above.

Question 5

In the expression n = x + rand() % y;

Accepted Answer

A)  y is the shifting value. 
B)  x is the scaling value. 
C)  y is the scaling value. 
D)  Both (a) and (b). 
A)  y is the shifting value. 
B)  x is the scaling value. 
C)  y is the scaling value. 
D)  Both (a) and (b).

Question 6

The argument list of a function call must match, or be consistent with, the parameter list of the called function in all of the following details, except:

Accepted Answer

A)  The number of arguments/parameters in the list. 
B)  The types of arguments/parameters in the list. 
C)  The names of arguments/parameters in the list. 
D)  The argument list and parameter list must match in all of the above details. 
A)  The number of arguments/parameters in the list. 
B)  The types of arguments/parameters in the list. 
C)  The names of arguments/parameters in the list. 
D)  The argument list and parameter list must match in all of the above details.

Question 7

For which of the following operators does C++ not specify the order of evaluation of its operands?

Accepted Answer

A) . +. 
B) . &&. 
C) . ,. 
D) . ?:. 
A) . +. 
B) . &&. 
C) . ,. 
D) . ?:.

Question 8

Which of the following is not a valid enumeration?

Accepted Answer

A)  enum class Person {ME, YOU, THEM};. 
B)  enum class Person {ME = 1, YOU = 2, THEM = 3};. 
C)  enum class Person {ME = 0, YOU = 0, THEM = 0};. 
D)  enum class Person {ME, YOU, ME};. 
A)  enum class Person {ME, YOU, THEM};. 
B)  enum class Person {ME = 1, YOU = 2, THEM = 3};. 
C)  enum class Person {ME = 0, YOU = 0, THEM = 0};. 
D)  enum class Person {ME, YOU, ME};.

Question 9

Which of the following is false?

Accepted Answer

A)  An engine implements a random-number generation algorithm that produce pseudorandom numbers. 
B)  A distribution controls the range of values produced by an engine, the types of those and the statistical properties of the values. 
C)  The default range of a uniform_int_distribution is from 0 to 32767. 
D)  C++11 provides many classes that represent various random-number generation engines and distributions. 
A)  An engine implements a random-number generation algorithm that produce pseudorandom numbers. 
B)  A distribution controls the range of values produced by an engine, the types of those and the statistical properties of the values. 
C)  The default range of a uniform_int_distribution is from 0 to 32767. 
D)  C++11 provides many classes that represent various random-number generation engines and distributions.

Question 10

Converting from type ________ to type ________ will result in the loss of data.

Accepted Answer

A)  bool, char. 
B)  float, double. 
C)  int, char. 
D)  short, long. 
A)  bool, char. 
B)  float, double. 
C)  int, char. 
D)  short, long.

Question 11

What value does function mystery return when called with a value of 4? int mystery (int number)
{
If (number <= 1) {
Return 1;
}
Else {
Return number * mystery(number - 1);
}
}

Accepted Answer

A)  0. 
B)  1. 
C)  4. 
D)  24. 
A)  0. 
B)  1. 
C)  4. 
D)  24.

Question 12

When an argument is passed-by-value, changes in the called function __________ affect the original variable's value; when an argument is passed call-by-reference, changes in the called function __________ affect the original variable's value.

Accepted Answer

A)  Do not, do. 
B)  Do not, do not. 
C)  Do, do. 
D)  Do, do not. 
A)  Do not, do. 
B)  Do not, do not. 
C)  Do, do. 
D)  Do, do not.

Question 13

Recursion is memory-intensive because:

Accepted Answer

A)  Recursive functions tend to declare many local variables. 
B)  Previous function calls are still open when the function calls itself and the activation records of these previous calls still occupy space on the call stack. 
C)  Many copies of the function code are created. 
D)  It requires large data values. 
A)  Recursive functions tend to declare many local variables. 
B)  Previous function calls are still open when the function calls itself and the activation records of these previous calls still occupy space on the call stack. 
C)  Many copies of the function code are created. 
D)  It requires large data values.

Question 14

A reference parameter:

Accepted Answer

A)  Is an alias for its corresponding argument. 
B)  Is declared by following the parameter's type in the function prototype by an ampersand (&). 
C)  Cannot be modified. 
D)  Both (a) and (b). 
A)  Is an alias for its corresponding argument. 
B)  Is declared by following the parameter's type in the function prototype by an ampersand (&). 
C)  Cannot be modified. 
D)  Both (a) and (b).

Question 15

Which of the following is true of function templates?

Accepted Answer

A)  All function templates begin with the keyword class. 
B)  Every formal type parameter is preceded by either keyword typename or template. 
C)  Formal type parameters act as placeholders for built-in types or user-defined types and are used to specify the types of arguments to the function, to specify the return type of the function, and to declare variables within the body of the function definition. 
D)  A programmer must define a separate function template for each template function specialization to be used in the program. 
A)  All function templates begin with the keyword class. 
B)  Every formal type parameter is preceded by either keyword typename or template. 
C)  Formal type parameters act as placeholders for built-in types or user-defined types and are used to specify the types of arguments to the function, to specify the return type of the function, and to declare variables within the body of the function definition. 
D)  A programmer must define a separate function template for each template function specialization to be used in the program.

Question 16

Which of the following does the C++ compiler not examine in order to select the proper overloaded function to call?

Accepted Answer

A)  Types and order of the arguments in the function call. 
B)  The number of arguments in the function call. 
C)  The return type of the function. 
D)  It examines all of the above. 
A)  Types and order of the arguments in the function call. 
B)  The number of arguments in the function call. 
C)  The return type of the function. 
D)  It examines all of the above.

Question 17

The rand function generates a data value of the type:

Accepted Answer

A)  unsigned int. 
B)  int. 
C)  long int. 
D)  short int. 
A)  unsigned int. 
B)  int. 
C)  long int. 
D)  short int.

Question 18

Each standard library has a corresponding:

Accepted Answer

A)  Function. 
B)  Variable type. 
C)  Header. 
D)  CD-ROM. 
A)  Function. 
B)  Variable type. 
C)  Header. 
D)  CD-ROM.

Question 19

C++11's unsigned long long int type (which can be abbreviated as unsigned long long) enables you to store values in at least ________, which can hold numbers as large as 18,446,744,073,709,551,615.

Accepted Answer

A)  2 bytes (16 bits) 
B)  4 bytes (32 bits) 
C)  8 bytes (64 bits) 
D)  16 bytes (128 bits) 
A)  2 bytes (16 bits) 
B)  4 bytes (32 bits) 
C)  8 bytes (64 bits) 
D)  16 bytes (128 bits)

Question 20

Which of the following is not included in <cmath>?

Accepted Answer

A)  pow. 
B)  floor. 
C)  ln. 
D)  log. 
A)  pow. 
B)  floor. 
C)  ln. 
D)  log.

Exam 6: Functions and an Introduction to Recursion

Enumeration constants:

Which of the following expressions returns the trigonometric sine of x?

If the function int volume(int x = 1, int y = 1, int z = 1); is called by the expression volume(3), how many default arguments are used?

Which of the following is true?

In the expression n = x + rand() % y;

The argument list of a function call must match, or be consistent with, the parameter list of the called function in all of the following details, except:

For which of the following operators does C++ not specify the order of evaluation of its operands?

Which of the following is not a valid enumeration?

Which of the following is false?

Converting from type ________ to type ________ will result in the loss of data.

What value does function mystery return when called with a value of 4? int mystery (int number) { If (number <= 1) { Return 1; } Else { Return number * mystery(number - 1); } }

When an argument is passed-by-value, changes in the called function __________ affect the original variable's value; when an argument is passed call-by-reference, changes in the called function __________ affect the original variable's value.

Recursion is memory-intensive because:

A reference parameter:

Which of the following is true of function templates?

Which of the following does the C++ compiler not examine in order to select the proper overloaded function to call?

The rand function generates a data value of the type:

Each standard library has a corresponding:

C++11's unsigned long long int type (which can be abbreviated as unsigned long long) enables you to store values in at least ________, which can hold numbers as large as 18,446,744,073,709,551,615.

Which of the following is not included in <cmath>?

Introduction to Computers and C++

Introduction to C Programming; Inputoutput and Operators

Introduction to Classes, Objects and Strings

Control Statements, Assignment, and Operators

Control Statements, Logical Operators

Class Templates Array and Vector; Catching Exceptions

Pointers and Pointer-Based Strings

Classes: a Deeper Look; Throwing Exceptions

Operator Overloading; String and Array Objects

Object-Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism

Stream Inputoutput: a Deeper Look

File Processing

Standard Library Containers and Iterators

Standard Library Algorithms

Exception Handling: a Deeper Look

Introduction to Custom Templates

Custom Templatized Data Structures

Searching and Sorting

Class String and String Stream Processing

Bits, Characters, C Strings and Structs

Other Topics

C++11 Additional Features

Filters

Converting from type to type will result in the loss of data.

When an argument is passed-by-value, changes in the called function affect the original variable's value; when an argument is passed call-by-reference, changes in the called function affect the original variable's value.