Week 06 Assignments

Textbook Reading * Chapter 4 * Chapter 5 sections 5.1, 5.2, and 5.3 (pages 196-201)

Week 06 Homework

From the Gaddis textbook: * Programming Exercises 2, 6 and 9, on pages 160-161
For the Programming Exercises, design a program means write the pseudocode for the program. Except for Programming Exercise 2, your design should include multiple modules, not just main().
Upload a Microsoft Word document with the pseudocode to your shared PT1420 community website or submit a paper copy to your instructor by the beginning of the Week 7 class.
Programing Exercises pg. 160-161
2. Areas of rectangles
Module Main()
Declare width1 integer = 0
Declare length1 integer = 0
Declare width2 integer = 0
Declare length2 integer = 0
Declare area1 integer = 0
Declare area2 integer = 0
Call rectangle1 (width1, length1, area1)
Call rectangle2 (width2, length2, area2)
Call comparison (rectangle1, rectangle2)
Display “press enter to continue”
End module

Module rectangle1 (value width1 as integer, value length1 as integer, value area1 as integer) Display "Enter the width of rectangle 1” Input width1 Display "Enter the length of rectangle 1" Input length1 area1 = width1 * length1
End module
Module rectangle2 (value width2 as integer, value length2 as integer, value area2 as integer) Display "Enter the width of rectangle 2” Input width2 Display "Enter the length of rectangle 2" Input length2 area2 = width2 * length2
End module

Module comparison (reference area1 as integer, reference area2 as integer) If area1 > area2 then Display “The rectangle 1 is larger” Else Display “The rectangle 2 is larger” End if
End module

6. Book club points
Main module () Declare purchase as integer = 0 Display “input the number of books have you purchased this month:” Input purchase If purchase < 1 then Display “you have 0 points” Else If purchase < 2 then Display “You have 5 points” Else If purchase < 3 then Display “You have 15 points” Else If purchase < 4 then Display “You have 30 points” Else Display “you have 60 points” End if End if End if End if End if
End main

9. Shipping charges
Main module () Declare pounds integer = 0 Display “input the weight of your package weigh in Lbs:” Input pounds
If Lbs <= 2 then Display “your will cost $1.10 to ship.” Else If Lbs <= 6 then Display “your will cost $2.20 to ship.” Else If Lbs <= 10 then Display “your will cost $3.70 to ship.” Else Display “your will cost $3.80 to ship.” End if End if End if
End if
End main

Upload a Microsoft Word document with the pseudocode to your shared PT1420 community website or submit a paper copy to your instructor by the beginning of the Week 7 class.

Week 05 and 06 Research – Exploring Why and When to Use Shell Scripts
Use the Internet and the ITT Tech Virtual Library to research shell scripts and answer the following questions:
What is the shell and what is a shell script?
What are some examples of tasks that shell scripts are used for? * Include at least three examples.
What are the advantages and disadvantages of using shell scripts? * Include at least three advantages and three disadvantages.
What are the ways to automate tasks in, also known as the kinds of named commands executed by, Windows PowerShell? * Name and briefly describe at least three of them.
Note that in the DOS operating system, a shell script is called a batch file and in IBM's mainframe VM operating systems, it's called an EXEC.Upload a Microsoft Word document with findings to your shared PT1420 community website or submit a paper copy to your instructor by the beginning of Week 7 class.
Research assignment
A shell script is a script written for the command line interpreter of an operating system. The shell is often considered a simple domain-specific programming language. It's called a shell script because it combines into a "script" in a single file a sequence of commands that would otherwise have to be presented to the system from a keyboard one at a time. Some advantages include; easy file selection, quick start, and interactive debugging. It can be used to provide sequencing and decision-making linkage around existing programs. Interpretive running makes it easy to write debugging code into a script and rerun it to detect and fix bugs.

The Most common usage methods of PowerShell are interactive console (powershell.exe) and script files. PowerShell uses special commands called cmdlets (pronounced 'command-lets') that can use .Net objects in input and output. PowerShell can also use legacy command line utilities.