Question 1

2.1 Q2 [C++11] Which of the following statements is false?

Accepted Answer

A)  The C++ standard redesigned the classic C++ stream classes, which processed only chars, as class templates with specializations for processing characters of types char and wchar_t, respectively. 
B)  C++11 added type char64_t to handle the new double-width Unicode characters. 
C)  The size of type wchar_t is not specified by the C++ standard. 
D)  C++11's new char16_t and char32_t types for representing Unicode characters were added to provide character types with explicitly specified sizes. 
A)  The C++ standard redesigned the classic C++ stream classes, which processed only chars, as class templates with specializations for processing characters of types char and wchar_t, respectively. 
B)  C++11 added type char64_t to handle the new double-width Unicode characters. 
C)  The size of type wchar_t is not specified by the C++ standard. 
D)  C++11's new char16_t and char32_t types for representing Unicode characters were added to provide character types with explicitly specified sizes.

Question 2

What will be output by the following statements? double x{1.23456789};
Cout << fixed;
Cout << setprecision(5) << x << endl;
Cout.precision(3);
Cout << x << endl;
Cout << x << endl;

Accepted Answer

A)  1.2346 1.23
1)23 
B)  1.23457 1.235
1)23456789 
C)  1.2346 1.23
1)23456789 
D)  1.23457 1.235
1)235 
A)  1.2346 1.23
1)23 
B)  1.23457 1.235
1)23456789 
C)  1.2346 1.23
1)23456789 
D)  1.23457 1.235
1)235

Question 3

Which of the following statements restores the default fill character?

Accepted Answer

A)  cout.defaultFill(); 
B)  cout.fill(); 
C)  cout.fill(0); 
D)  cout.fill(' '); 
A)  cout.defaultFill(); 
B)  cout.fill(); 
C)  cout.fill(0); 
D)  cout.fill(' ');

Question 4

Overloaded operators can be used to test a stream's state in conditions. The operator! member function, inherited into the stream classes from class basic_ios, returns true if the badbit, the failbit or both are true. The ________ member function (added in C++11) returns false if the badbit is true, the failbit is true or both are true.

Accepted Answer

A)  operator boolalpha 
B)  operator! 
C)  operator boolean 
D)  operator bool 
A)  operator boolalpha 
B)  operator! 
C)  operator boolean 
D)  operator bool

Question 5

Which of the following outputs does not guarantee that the uppercase flag has been set?

Accepted Answer

A)  All hexadecimal numbers appear in the form 0X87. 
B)  All numbers written in scientific notation appear the form 6.45E+010. 
C)  All text outputs appear in the form SAMPLE OUTPUT. 
D)  All hexadecimal numbers appear in the form AF6. 
A)  All hexadecimal numbers appear in the form 0X87. 
B)  All numbers written in scientific notation appear the form 6.45E+010. 
C)  All text outputs appear in the form SAMPLE OUTPUT. 
D)  All hexadecimal numbers appear in the form AF6.

Question 6

What will be output by the following statement? cout << showpoint << setprecision(4) << 11.0 << endl;

Accepted Answer

A)  11 
B)  11.0 
C)  11.00 
D)  11.000 
A)  11 
B)  11.0 
C)  11.00 
D)  11.000

Question 7

Which of the following classes is a base class of the other three?

Accepted Answer

A)  basic_ios 
B)  basic_istream 
C)  basic_ostream 
D)  basic_iostream 
A)  basic_ios 
B)  basic_istream 
C)  basic_ostream 
D)  basic_iostream

Question 8

Select the correct statement regarding C++ I/O streams:

Accepted Answer

A)  C++ provides only high-level I/O capabilities because it is a high-level programming language. 
B)  High-level (formatted) I/O is best for large-volume transfers. 
C)  Low-level I/O breaks information down into small, meaningful groups of related bytes. 
D)  Programmers generally prefer high-level I/O to low-level I/O. 
A)  C++ provides only high-level I/O capabilities because it is a high-level programming language. 
B)  High-level (formatted) I/O is best for large-volume transfers. 
C)  Low-level I/O breaks information down into small, meaningful groups of related bytes. 
D)  Programmers generally prefer high-level I/O to low-level I/O.

Question 9

The stream-extraction operator:

Accepted Answer

A)  Does not normally accept white-space characters. 
B)  Returns true when the end-of-file is encountered. 
C)  Sets the stream's failbit if the operation fails. 
D)  Sets the stream's badbit if the data is of the wrong type. 
A)  Does not normally accept white-space characters. 
B)  Returns true when the end-of-file is encountered. 
C)  Sets the stream's failbit if the operation fails. 
D)  Sets the stream's badbit if the data is of the wrong type.

Question 10

Upon encountering the designated delimiter character, the ignore member function will:

Accepted Answer

A)  Read it in and return its value. 
B)  Ignore it and continue reading and discarding characters. 
C)  Terminate. 
D)  Replace it with an EOF character. 
A)  Read it in and return its value. 
B)  Ignore it and continue reading and discarding characters. 
C)  Terminate. 
D)  Replace it with an EOF character.

Question 11

The difference between the operator! member function and the operator void* member function is that:

Accepted Answer

A)  They always return opposite boolean values. 
B)  They occasionally return opposite boolean values. 
C)  Of the two member functions, only operator! checks if eof has been set. 
D)  Of the two member functions, only operator void* checks if eof has been set. 
A)  They always return opposite boolean values. 
B)  They occasionally return opposite boolean values. 
C)  Of the two member functions, only operator! checks if eof has been set. 
D)  Of the two member functions, only operator void* checks if eof has been set.

Question 12

Which of the following is not a member function of the C++ ostream class?

Accepted Answer

A)  Stream-insertion operator (>). 
C)  put. 
D)  write. 
A)  Stream-insertion operator (>). 
C)  put. 
D)  write.

Question 13

Which of the following is a difference between the read and write functions?

Accepted Answer

A)  One performs formatted I/O and the other does not. 
B)  They take different types of parameters. 
C)  write and gcount are member functions of the same class, whereas read is not. 
D)  The failbit is set only with read. 
A)  One performs formatted I/O and the other does not. 
B)  They take different types of parameters. 
C)  write and gcount are member functions of the same class, whereas read is not. 
D)  The failbit is set only with read.

Question 14

Which of the following classes is deepest in the inheritance hierarchy?

Accepted Answer

A)  basic_iostream 
B)  basic_ofstream 
C)  basic_ifstream 
D)  basic_fstream 
A)  basic_iostream 
B)  basic_ofstream 
C)  basic_ifstream 
D)  basic_fstream

2.1 Q2 [C++11] Which of the following statements is false?

What will be output by the following statements? double x{1.23456789}; Cout << fixed; Cout << setprecision(5) << x << endl; Cout.precision(3); Cout << x << endl; Cout << x << endl;

Which of the following statements restores the default fill character?

Which of the following outputs does not guarantee that the uppercase flag has been set?

What will be output by the following statement? cout << showpoint << setprecision(4) << 11.0 << endl;

Which of the following classes is a base class of the other three?

Select the correct statement regarding C++ I/O streams:

The stream-extraction operator:

Upon encountering the designated delimiter character, the ignore member function will:

The difference between the operator! member function and the operator void* member function is that:

Which of the following is not a member function of the C++ ostream class?

Which of the following is a difference between the read and write functions?

Which of the following classes is deepest in the inheritance hierarchy?

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

Functions and an Introduction to Recursion

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

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

Exam 13: Stream Inputoutput: a Deeper Look

2.1 Q2 [C++11] Which of the following statements is false?

What will be output by the following statements? double x{1.23456789}; Cout << fixed; Cout << setprecision(5) << x << endl; Cout.precision(3); Cout << x << endl; Cout << x << endl;

Which of the following statements restores the default fill character?

Which of the following outputs does not guarantee that the uppercase flag has been set?

What will be output by the following statement? cout << showpoint << setprecision(4) << 11.0 << endl;

Which of the following classes is a base class of the other three?

Select the correct statement regarding C++ I/O streams:

The stream-extraction operator:

Upon encountering the designated delimiter character, the ignore member function will:

The difference between the operator! member function and the operator void* member function is that:

Which of the following is not a member function of the C++ ostream class?

Which of the following is a difference between the read and write functions?

Which of the following classes is deepest in the inheritance hierarchy?

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

Functions and an Introduction to Recursion

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

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