L A B O V E R V I E W
Scenario/Summary
You will code, build, execute, debug, and test two programs using decision structures. The first program will calculate the shipping charge based on a given purchase amount. The second program translates a given TV channel to its call sign.
Deliverables
Submit the following to this week’s Dropbox:
1. A zipped Visual Studio project folder for each programming exercise. Refer to the Deliverables section of the Week 1 iLab page for detailed instructions on how to zip a project folder.
2. A single MS Word file named YourLastName_Lab1_ex1.docx containing the following items:

• The source code for each program in the lab: Your source code should use proper indentation, include meaningful comments, and be error free. Start each with a specification that includes your name, the lab and exercise number, and a description of what the program accomplishes, similar to this:

/* Specification:
First Name Last Name
Lab 1 Exercise #
This program does X */
• Labeled screenshot(s) of the output windows for each program, showing that each program produces correct results

NOTE: A screenshot of a window can be created by first clicking on it to activate it. Next, press the key or key combination your specific computer uses to do a “print screen” (typically the Prnt Scrn or Prnt key in combination with the ctrl or FN key). Then, click the MS Word “paste” option to paste the screenshot into the MS Word file.
Objectives and Grading
Lab Objectives:
1. To be able to design program logic using either a flowchart or pseudocode
2. To be able to define and use data types
3. To be able to prompt the user for input
4. To be able to use the assignment statement for calculations
5. To be able to display output to the console in a formatted manner
6. To be able to debug a program of syntax and logic errors
7. To be able to make decisions
Your lab grade will be based upon:
1. the formatting of your source code;
2. the use of meaningful identifiers;
3. the extent of internal documentation; and
4. the degree to which an exercise’s specifications are met.
Preparation:

If you are using the Citrix remote lab, follow the login instructions located in the iLab tab in Course Home.
iLab 2

Part A: Calculate Shipping Charge
Requirements

Your mission: Write a program that gets the amount of a purchase from the user and then calculates the shipping charge, based on the following table:
$0.00 – $250.00: $5.00
$250.01 – $500.00: $8.00
$500.01 – $1,000.00: $10.00
$1,000.01 – $5,000.00: $15.00
over $5,000.00: $20.00
Sample output from program:
Enter a purchase amount to find out your shipping charges.
Please enter the amount of your purchase: 234.65
The shipping charge on a purchase of $234.65 is $5.00.
Press any key to continue . . .
Tips

Best practice: Put yourself in the place of the program. What questions would you ask a customer in order to get the best input? How would you determine the correct shipping charges if you had to make the decisions yourself? Write out the questions you would ask yourself on paper as pseudocode and/or in Visual Studio as C# comments, and then implement them one by one, testing as you go. Remember to not write too much at one time. Always add and test functionality incrementally!

You can use the pseudocode below as a guide:
Prompt the user for the sale amount
Is sale amount greater than $5,000.00?
If so, shipping is $20.00
If not, is sale amount greater than $1,000.00?
If so, shipping is $15.00
If not, is sale amount greater than $500.00?
If so, shipping is $10.00
If not, is sale amount greater than $250.00?
If so, shipping is $8.00
If not, is sale amount greater than $0.00
shipping is $5.00
If not
shipping is $0.00
If shipping is $0.00
Display “Error incorrect input”
If not
Display sale amount and shipping charge

Part B: TV Channel to Call Sign
Requirements

Your mission: Write a program that translates a TV channel (1 through 10) in your area to its respective call sign. For example, in the New York metropolitan area, channel 2 translates to WCBS. If a channel is unused in your area, tell the user that this is the case.
Sample output from program:
Translate TV Channel Number to Call Sign
Enter channel number: 1
Channel 1 is undesignated in your area
Enter channel number: 2
Call sign for channel 2 is WCBS
Enter channel number: 6
Call sign for channel 6 is WRNNDT

Tips

Best practice: Put yourself in the place of the program. What steps would you personally need to perform in order to process a channel translation yourself? Write out those steps on paper as pseudocode and/or in Visual Studio as C# comments, and then implement them one by one, testing as you go. Remember to not write too much at one time. Always add and test functionality incrementally!
Pseudocode: Although there are several valid ways to write the program, the following is an outline of one way to design the overall logic.
• Declare variables for channel and call sign
• Get channel number from user
• Use appropriate decision structure to translate number to call sign
• If number is valid in area
o Print out translation
• If not
o Tell user this is the case