SOFTWARE ENGINEERING >C<
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ISBN: 9781323165331
Author: SOMMERVILLE
Publisher: PEARSON C
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Chapter 4, Problem 4.5E
Program Plan Intro
Given Information:
An unattended petrol pump includes a credit card reader where the customer swipes the card through the reader and then specifies the amount of fuel required. Then the fuel is delivered and the customer’s account is debited. Then the cash-dispensing function in a bank ATM and the spelling-check and correcting function in a word processor.
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Provide a minimum of ten (10) instances of different scenarios in which you are able to relate as a function. We ask that you refrain from copying the response from Google.
With regard to the following JavaScript program,
function main() {
function sub1()
var x = 10;
function sub2() {
var y = x;
}
function sub3()
var x = 5; var x = 20;
}
1) If it is interpreted using static-scoping rules. What value of x is displayed in functions sub1, sub2, and sub3 respectively? Why?
2) If it is under dynamic-scoping rules, what value of x is displayed in functions sub1, sub2, and sub3 respectively? Why?
Provide justification for the superiority of user-defined functions over built-in ones.
Chapter 4 Solutions
SOFTWARE ENGINEERING >C<
Ch. 4 - Identify and briefly describe four types of...Ch. 4 - Prob. 4.2ECh. 4 - Prob. 4.3ECh. 4 - Prob. 4.4ECh. 4 - Prob. 4.5ECh. 4 - Suggest how an engineer responsible for drawing up...Ch. 4 - Prob. 4.7ECh. 4 - Prob. 4.8ECh. 4 - When emergency changes have to be made to systems,...Ch. 4 - Prob. 4.10E
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- Consider the following JavaScript skeletal program: //The main program var x; function sub1() { var x; function sub2() { . . . } } function sub3() { . . . } Assuming Dynamic scoping, which declaration of x will be used inthe following functions: a) sub1() b) sub2() c) sub3() You can consider the first declaration of x as x1 and the second as x2arrow_forwardWrite a function to describe the following scenario. Jonathan is selling his old trading cards. Each customer that buys gets the first box they purchase for $10, and each additional box for only $5.arrow_forwardSuppose that you wanted to design a function to send email to patrons of the library who have overdue books. Which of the following would be a plausible start? arrow_forward
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