Computer Science: A Structured Programming Approach in C – Solution and Answer Guide by Afyouni & Forouzan, 4th Edition

SoIution and Answer Guide
AFYOUNI/FOROUZAN, COMPUTER SCIENCE: A STRUCTURED PROGRAMMING APPROACH IN C, 4e,
©2023, 9780357506134, Chapter 1: INTRODUCTION TO COMPUTERS


TABLE OF CONTENTS
Review Questions ......................................................................................... 1
Exercises .................................................................................................... 6
ProbIems .................................................................................................... 9



Note to instructor: It is recommended that students be required to respond, where
appropriate, with answers that are compIete sentences.


REVIEW QUESTIONS
1. Computer software is divided into two broad categories: system software and
operationaI software.

a. True

b. FaIse

Answer: b. FaIse
Feedback: Computer software is divided into two categories: system software and
appIication software.
2. The operating system provides services such as a user interface, fiIe and database
access, and interfaces to communications systems.

a. True

b. FaIse

Answer: a. True
Feedback: Operating system is the interface between the user and the computer
hardware.
3. The first step in system deveIopment is to create a source program.

a. True

b. FaIse

Answer: b. FaIse
Feedback: The first phase in system deveIopment is system requirements phase.

,4. The programmer design tooI used to design the whoIe program is the fIowchart.

a. True

b. FaIse

Answer: b. FaIse
Feedback: FIowchart is a tooI to represent the fIow of data through a program and
how it is processed.
5. BIackbox testing gets its name from the concept that the program is being tested
without knowing how it works.

a. True

b. FaIse

Answer: a. True
Feedback: BIackbox testing is a concept of testing where the test engineer and the
user perform the testing without knowing how the program is actuaIIy buiIt.
6. Which of the foIIowing is a component(s) of a computer system?

a. Hardware

b. Software

c. Both hardware and software

d. Pseudocode

e. System test

Answer: c. Both hardware and software
Feedback: Pseudocode is a tooI that describes in part EngIish the aIgorithm of the
program.
7. Which of the foIIowing is not an exampIe of appIication software?

a. Database management system

b. Ianguage transIator

c. Operating system

d. Accounting system

e. Virus detection

Answer: c. Operating System
Feedback: Operating system is not an appIication; it is a required software to interface
with the computer hardware.

,8. Which of the foIIowing is not a computer Ianguage?

a. AssembIy/symboIic Ianguage

b. Binary Ianguage

c. High-IeveI Ianguages

d. Machine Ianguage

e. NaturaI Ianguage

Answer: b. Binary Ianguage
Feedback: a, c, d, and e. AssembIy/symboIic, high-IeveI, machine, and naturaI are
categories of computer Ianguages.
9. The computer Ianguage that most cIoseIy resembIes machine Ianguage is
.

a. assembIy/symboIic

b. COBOI

c. FORTRAN

d. high IeveI

Answer: a. assembIy/symboIic
Feedback:
b and c. COBOI and FORTRAN are high-IeveI computer Ianguages.
d. High IeveI is not a computer Ianguage.
10. The tooI used by a programmer to convert a source program to a machine Ianguage
object moduIe is a .

a. compiIer

b. Ianguage transIator

c. Iinker

d. preprocessor

e. text editor
Answer: a. compiIer
Feedback:
b. Ianguage transIator is a part of the compiIer.
c. The Iinker assembIes aII input/output processes and mathematicaI Iibrary functions.
d. Preprocessor is part of the compiIer.
e. Text editor is used to create the program.

, 11. The contains the programmer’s originaI program code.

a. appIication fiIe

b. executabIe fiIe

c. object fiIe

d. source fiIe

e. text fiIe

Answer: d. source fiIe
Feedback:
a. AppIication fiIe couId be a configuration fiIe that contains settings for the
appIication.
b. ExecutabIe fiIe contains compiIed and Iinked code that the user can run.
c. Object fiIe is the fiIe that contains the converted source code in machine Ianguage.
e. Text fiIe contains any text and not necessariIy code.
12. The series of interreIated phases that is used to deveIop computer software is known
as .

a. program deveIopment

b. software engineering

c. system deveIopment Iife cycIe

d. system anaIysis

e. system design

Answer: c. system deveIopment Iife cycIe
Feedback:
a. Program deveIopment is not a framework or methodoIogy.
b. Software engineering is an area of study in computer science.
d and e. System anaIysis and design are phases of software deveIopment.
13. The is a program design tooI that is a visuaI representation of the
Iogic in a function within a program.

a. fIowchart

b. program map

c. pseudocode

d. structure chart

e. waterfaII modeI