dis_chapter_quiz1

Question 1

The primary role of the constructors is to initialize the data members of objects (either with default values or with values provided as arguments).

Answer 1

true

Question 2

int a[4] = {7,5,3,1};
Given the array definition above, which of the following prints 7 as the output?

Answer 2

cout &laquo_space;*a &laquo_space;endl;

Question 3

Function overloading is not permitted in C++.

Answer 3

False

Question 4

In C++, process of deallocating memory is handled automatically by the garbage collector. Therefore, unused memory locations are returned to the heap automatically for later allocations.

Answer 4

False

Question 5

An object can access its public members by using the dot operator (.).

Answer 5

True

Question 6

Data members of the classes normally placed in “public:” section of a class.

Answer 6

False

Question 7

Most C++ compilers check whether array indices are out of range.

Answer 7

False

Question 8

Which of the following is the subscript operator in C++ to access the elements of an array?

Answer 8

[ ]

Question 9

Procedural programming paradigm focuses on the verbs of a problem’s specification whereas object-oriented programming paradigm focuses on its nouns.

Answer 9

True

Question 10

n C++, all elements of an array have same data type.

Answer 10

True

Question 11

Which of the following function can be used to check whether there is more data to be read from an input file stream or not?

Answer 11

eof

Question 12

Given a string s having more than 4 characters, s[3] and s.at(3) returns the same character.

Answer 12

True

Question 13

When the capacity of a vector is full, push_back() function adds the element by removing the first element

Answer 13

False

Question 14

When the capacity of a vector is full, push_back() function adds the element by removing the first element

Answer 14

False

Question 15

Which of the following classes should be used to print output to a file?

Answer 15

ofstream

Question 16

If you have a template class named MyClass, which of the following instantiates an object correctly?

Answer 16

MyClass<int> a;</int>

Question 17

Dereferencing operator * is used to access the contents of memory location pointed by a pointer.

Answer 17

true

Question 18

Only numbers can be stored in C++ variables.

Answer 18

False

Question 19

unsigned short values are stored in 2 bytes in C++. What is the maximum number that can be stored in an unsigned short variable?

Answer 19

2^16-1

Question 20

Logical errors occur when the source code violates the syntax (i.e., the grammar rules) of the language

Answer 20

False

Question 21

A pointer is a variable whose value is the address of another variable.

Answer 21

True

Question 22

An algorithm is a finite sequence of well-defined, computer-implementable instructions, typically to solve a class of specific problems or to perform a computation

Answer 22

True

Question 23

One of the earliest models of software development in which the phases are carried out sequentially, moving from one phase to the next, is known as the waterfall model

Answer 23

True

Question 24

The leftmost bit is the sign bit (0 for nonnegative values, 1 for negative) in two’s complement representation.

Answer 24

True

Question 25

bool values are stored in 2 bytes in C++.

Answer 25

False

Question 26

Arithmetic overflow happens when an arithmetic operation results in a value that is outside the range of values representable by the expression’s type.

Answer 26

True

Question 27

Linked lists remove requirement that list elements be stored in consecutive memory locations.

Question 28

Linked lists have direct access to each element of the list.

Question 29

Insertion is not possible at the beginning of a linked list.

Question 30

Adding an element to the end of an array-based list is easier (requires less operation) than linked lists.

Answer 30

True

Question 31

The array-based implementation of a list works well for lists with many insertions and deletions.

Answer 31

False

Question 32

Since default assignment operator makes a shallow copy, assignment operator should be overloaded for a deep copy when there is dynamically allocated data members in a class.

Answer 32

True

Question 33

A linked list with 100 elements uses more memory than an array-based list with a capacity of 100 elements.

Answer 33

True

Question 34

Which of the following does not require shifting during insertion or deletion?

Answer 34

Linked List

Question 35

Which of the following accepts the capacity of the list as a parameter of the constructor (e.g., List aList (500))

Answer 35

Linked List array