Starting Out with Programming Logic and Design (4th Edition)
4th Edition
ISBN: 9780133985078
Author: Tony Gaddis
Publisher: PEARSON
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Textbook Question
Chapter 7, Problem 4SA
In this chapter you saw how a posttest loop can be used in input validation, as an alternative to the priming read followed by a pretest loop. Why is it typically not best to use a posttest loop approach?
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Chapter 7 Solutions
Starting Out with Programming Logic and Design (4th Edition)
Ch. 7.1 - What does the phrase garbage in, garbage out mean?Ch. 7.1 - Give a general description of the input validation...Ch. 7.2 - Describe the steps that are generally taken when...Ch. 7.2 - Prob. 7.4CPCh. 7.2 - If the input that is read by the priming read is...Ch. 7 - GIGO stands for a. great input, great output b....Ch. 7 - The integrity of a programs output is only as good...Ch. 7 - The input operation that appears just before a...Ch. 7 - Validation loops are also known as a. error traps...Ch. 7 - The term empty input describes what happens when...
Ch. 7 - The process of input validation works like this:...Ch. 7 - The priming read appears inside the validation...Ch. 7 - The approach of using a posttest validation loop...Ch. 7 - What does the phrase garbage in, garbage out mean?Ch. 7 - Give a general description of the input validation...Ch. 7 - Prob. 3SACh. 7 - In this chapter you saw how a posttest loop can be...Ch. 7 - Design an algorithm that prompts the user to enter...Ch. 7 - Design an algorithm that prompts the user to enter...Ch. 7 - Design an algorithm that prompts the user to enter...Ch. 7 - Design an algorithm that prompts the user to enter...Ch. 7 - Design an algorithm that prompts the user to enter...Ch. 7 - Prob. 1DECh. 7 - Why does the following pseudocode not perform as...Ch. 7 - The following pseudocode works, but it performs a...Ch. 7 - Payroll Program with Input Validation Design a...Ch. 7 - Theater Seating Revenue with Input Validation A...Ch. 7 - Fat Gram Calculator Design a program that asks for...Ch. 7 - Speeding Violation Calculator Design a program...Ch. 7 - Rock, Paper, Scissors Modification Programming...
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- What exactly does it mean for something to be "debugged"? In what way does this relate to the testing that takes place?arrow_forwardCan Boolean methods be used to modularize input validation? Why or why not?arrow_forwardGive an example of a while loop, then provide the equivalent do-while loop and for loop. Then give a different example of a do-while loop, along with the equivalent while loop and for loop. Finally, give an example of a for loop, along with the equivalent while loop and do-while loop. Use your examples to illustrate the advantages and disadvantages of each looping structure, and describe those advantages and disadvantages.arrow_forward
- What is the precise function of debugging, and how does it work in practise? How does this information pertain to the evaluation process?arrow_forwardQUESTION 8 If we wanted something like the python else statement for a counter controlled loop in Java, what would it look like? We simply check either break or continue flags to see if either is set We simply check break variable to see if used. we check the for flag to see if loop terminated correctly Since there is no way for a loop in Java to tell you if it completed without breaks or continues, you'd need to set a boolean flag to indicate that and check it after the loop was completed.arrow_forwardWhat are the challenges with logically controlled loop statements in terms of design?arrow_forward
- Q2:C has many statements for decisions and loops, while MIPS has few. What are the pros and cons for having more or less decision/loop statements? Please give several detailed examples.arrow_forwardExplain in detail three things you can try if you have followed the debugging process and are still unable to fix the problem.arrow_forwardTo what end does debugging work, and how does it do so? What does this have to do with testing, if anything?arrow_forward
- A criticism of the break and continue statements is that each is unstructured. These statements can always be replaced by structured statements. Describe in general how you’d remove any break statement from a loop in a program and replace it with some structured equivalent. [Hint: The break statement leaves a loop from within the body ofthe loop. Another way to leave is by failing the loop-continuation test. Consider using in theloop-continuation test a second test that indicates “early exit because of a ‘break’ condition.”] Use the technique you developed here to remove the break statement from the program of Fig. 5.13.arrow_forwardConsider the following common task done repeatedly:• Read the next input (x = read())• If the input is not valid (valid(x)), exit the loop• Print the input read (print(x))• Repeat the loopUsing C++ syntax:Write the loop above using a pretest loop, posttest loop and a user-located loop control mechanism. From the three which one is more readable and why?arrow_forwardlanguage is c++arrow_forward
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