Programming 2
Shane0301
Lab7_decision.docx______________________________________________________________________________________________________________________________________________________________________________________________________________________
CTI 110 Page 2
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Lesson 7
Lab – Decision structures
Objectives:
· Understand when the Control Structure: Decision is needed
· Use a Decision structure to determine which calculation to use
· Use the AND/OR operator in your decision structure
· Use string comparisons
· Use numeric comparisons
· Translate pseudocode to flowcharts using Flowgorithm
· Use named constants and variables to reserve memory locations
· Follow required naming conventions
· Understand the difference between Input, Processing and Output (IPO) and how implement the Decision Structure
· Use comments to document test cases
Lab Task Checklist
· It is expected you have read the required reading in this Lesson before starting the lab.
· Review Course Resources/Rules of Engagement (ROE) and Standards/ROE
· Review Course Resources/Flowgorithm Guidance/Menu Guidance
· Use Flowgorithm to create an algorithm meeting customer requirement under Instructions
· Naming Convention: “ lastname-l7.fprg ” ( Flowgorithm Document )
· Submit lab files to Blackboard.
Instructions:
1. Review the customer requirements
Customer Requirements: The customer needs an application that provides the total cost of concert tickets to include sales tax. The customer will provide their name, phone number, and how many adult and child tickets they want. The program will do the required calculation and display the name, phone number, #number of tickets, fee, sales TAX total, subtotal, and total cost.
· Adult tickets are $36.75/each and child tickets are $25.50/each.
· Sales TAX is 7% (0.07 for calculations purposes)
· It needs to display the transaction with a title of the Concert (This is provided by the program)
· There is an additional fee (not Taxed) based on how many total tickets
· If less than or equal to 5 total tickets, then fee is $1 (1.00) per person
· If more than 5 total tickets, then fee is (.50) per person.
· The fee is not Taxed but is part of the total cost.
· The algorithm will calculate the total cost = subtotal + sales TAX total + fee
· Fee has been added to the display requirements
· Program should exit when there is an input error in either Date or Number of Adults
· The only dates that are available for Attendance are: Mar , Apr, or May.
· There must be at least one adult ticket purchased before any processing is done
2. Review the IPO and example pseudocode found below.
3. Open Flowgorithm and save with the required naming conventions in the “Lab Task Checklist” and remember to enter your Program Attributes.
4. Translate the below pseudocode to flowcharts using Flowgorithm.
5. What the pseudocode does:
6. Reserve Memory Locations (Declare) - Use as short and meaningful names
a. Variables - Declares variables close to where they will be used
i. Use the correct naming conventions (found in ROE)
b. Named constants - Declares named constants at the start of the program
i. Uses named constants for:
1. cost of adult tickets
2. cost of child tickets
3. TAX rate
4. the two different fees
5. ATTEND number test
c. Uses prompts to describe required input before asking for input
d. You will need to provide the title of your own concert, as well as your lastname for programmer credits and end of program message
e. The output is delineated what each value is.
i. name and phone number with the details of total cost
f. Detailed breakout of Total cost to include: # of adult tickets, # of child tickets, subtotal, sales Tax total, fee, and total cost.
7. Document your test cases using the comment block of flowgorithm
SPECIAL NOTE:
Do not use magic numbers when named constants are a better choice. i.e., #cost of tickets, TAX rate, fee charges, test for fee. Make sure your calculation uses the NAMED CONSTANTS instead of actual numbers.
Input, Processing and output (ipo)
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Input |
Processing |
Output |
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Constants: Tax Rate = 0.07 Price of adult tickets = 36.75 Price of child tickets = 25.50 Maximum fee = 1.00 Minimum fee = .50 Attend Limit = 5
Variables: Name Phone Number # adult tickets # child tickets Date
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Assign price of adult, child tickets and Tax rate Assign fee rate for minimum and maximum Assign number for Attend test Get # adult tickets Test for Adults Get Date Test for Date Get # child tickets Get Name, Phone Number Calculate subtotal, sales Tax, fee, and total cost · subtotal = (#adult * 36.75) + (#child * 25.50) · total sales TAX = subtotal * 0.07 · total fees if less than or equal to 5 attending · fee = #total tickets * 1.00 · total fees if more than 5 attending · fee=#total tickets * .50 · total cost = subtotal + sales TAX + fee
EXIT · If does not pass adult test, exit with msg · If does not pass date test; exit with msg
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Title of Concert error message for adult and date Prompts for Input # adult tickets, # child tickets and result of subtotal, sales Tax, total cost. name and phone number with an additional sentence saying the details of total cost
Programmer Credits |
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Test Data |
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T1:Adults 0, child 2 Exits at adult entry T2: Adults 2, child 0. Wrong Date. exits at date entry T3: adults 2 , child 2. Subtotal = 124.5.5. Sales Tax =8.715 , fee = 4,total cost = 137.215 Test 5 or less T4: adults 3, child 2. Subtotal = 161.25, Sales Tax= 11.2875, fee = 5 for Total Cost = 177.5375. attending=5 T5: adults 3 child 3 Subtotal = 186.75, Sales Tax=13.0725, fee = 3 for Total Cost = 202.8225 |
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Pseudocode Example (Gaddis Pseudocode):
**DISCLAIMER: This is only one of many ways that can be used to meet the customer requirements above.
** Reminder: Flowgorithm concatenation symbol is an ampersand (&) not a comma (,)
Function Main
// T1:Adults 0, child 2 Exits at adult entry
// T2: Adults 2, child 0. Wrong Date. exits at date entry
// T3: adults 2 , child 2. Subtotal = 124.5.5. Sales Tax =8.715 , fee = 4,total cost = 137.215 Test 5 or less
// T4: adults 3, child 2. Subtotal = 161.25, Sales Tax= 11.2875, fee = 5 for Total Cost = 177.5375.
// T5: adults 3 child 3 Subtotal = 186.75, Sales Tax=13.0725, fee = 3 for Total Cost = 202.8225
Declare Real TAX, ADULTcost, CHILDcost, MINfee, MAXfee
Set TAX = 0.07
Set ADULTcost = 36.75
Set CHILDcost = 25.50
Set MINfee = 0.50
Set MAXfee = 1.00
Declare Integer ATTEND
Set ATTEND = 5
Display "This program calculates total cost of concert tickets"
Display "Some CONCERT Title"
Display "How Many Adults. You need at least one."
Declare Integer adultTickets
Input adultTickets
If adultTickets >= 1 Then
Display "You must choose one of the allowed dates which are Mar, Apr or May"
Display "Please enter the date you wish to Attend"
Declare String date
Input date
If date == "Mar" OR date == "Apr" OR date == "May" Then
Display "Child Tickets Needed"
Declare Integer childTickets
Input childTickets
Display "Name"
Declare String name
Input name
Display "Phone Number"
Declare String phone
Input phone
Declare Real subtotal, salesTax, totalCost, fee
Declare Integer totalTickets
Set totalTickets = childTickets + adultTickets
If totalTickets <= ATTEND Then
Set fee = totalTickets * MAXfee
Else
Set fee = totalTickets * MINfee
End If
Set subtotal = adultTickets * ADULTcost + childTickets * CHILDcost
Set salesTax = subtotal * TAX
Set totalCost = subtotal + salesTax + fee
Display "Some CONCERT Title"
Display "Thank you ", name, " at ", phone, ". Details of your total cost ", totalCost, " can be found below:"
Display "Adult Tickets: ", adultTickets
Display "Child Tickets: ", childTickets
Display "The date you selected was ", date
Display "Subtotal is: $ ", subtotal, ", Tax is: $", salesTax, ", Additional Fee is $", fee, " for a total cost of: $ ", totalCost
Else
Display "I am sorry, the only dates are Mar, Apr or May. This program will now exit."
End If
Else
Display "I am sorry, you must have at least one adult. This program will now exit."
End If
// "Your last name and message for end of program"
Display "Thank you for using this program. This program was designed by lastname"
Graphic of Pseudocode Example (Gaddis Pseudocode):
AY2023
