CIS115 Logic and Design

CIS115 Week 1 Lab Building a Registration Form and Pay Calculator in Python

CIS115 Week 1 Lab Overview

Title of Lab: Building a Registration Form and Pay Calculator in Python

Summary – Part 1
Create a program that allows a student to complete a registration form and displays a completion message that includes the user's full name and a temporary password.

Summary – Part 2
Create a program that calculates a user's weekly gross and take-home pay.

Deliverables
• 2 source code Python files.
• A Word document containing both source code and the screen print of the program outputs.

Lab Steps
Part 1 – Registration Form

Sample Output:
Registration Form
First Name: Eric
Last Name: Idle
Birth Year: 1934
Welcome Eric Idle!
Your Registration is complete.
Your temporary password is: Eric*1934

Specifications:
• The user's full name consists of the user's first name, a space, and the user's last name.
• The temporary password consists of the user's first name, an asterisk (*), and the user's birth year.
• Assume the user will enter valid data.

INPUT  PROCESSING         OUTPUT
first_name password=first_name + "*" + str(birth_year) password
last_name
birth_year

Part 2 – Pay Calculator

Sample Output:
Pay Check Calculator
Hours Worked: 35
Hourly Pay Rate: 14.50
Gross Pay: 507.5
Tax Rate: 18
Tax Amount: 91.35
Take Home Pay: 416.15

• The formula for calculating gross pay is:
 o gross pay = hours worked * hourly rate
• The formula for calculating tax amount is:
 o tax amount = gross pay * (tax rate / 100)
• The formula for calculating take home pay is:
 o take home pay = gross pay - tax amount
• The tax rate should be 18%, but the program should store the tax rate in a variable so that you can easily change the tax rate later, just by changing the value that's stored in the variable.
• The program should accept decimal entries like 35.5 and 14.25.
• Assume the user will enter valid data.
• The program should round the results to a maximum of two decimal places.

INPUT  PROCESSING           OUTPUT
hours  gross_pay = round(hours * pay_rate, 2)    gross_pay
pay_rate tax_rate = 18          tax_rate
   tax_amount = round(gross_pay * (tax_rate / 100), 2) tax_amount
   take_home_pay = round(gross_pay - tax_amount, 2) take_home_pay

CIS115 Week 2 Lab Even or Odd and Grade Checker in Python

CIS115 Week 2 Lab Overview

Title of Lab: Even or Odd and Grade Checker in Python

Summary - Part 1
Create a program that checks whether a number is even or odd.

Summary - Part 2
Create a program that checks one's letter grade.

Deliverables
• 2 source code Python files.
• A Word document containing both source code and the screen print of the program outputs.

Lab Steps
Part 1 - Even or Odd

Sample Output:
Even or Odd
Enter an integer: 20
This is an even number.

Specifications:
• Use the selection structure.
• Assume that the user will enter a valid integer

Part 2 - Pay Calculator
Make sure to use the following criteria:
• 100 - 90: A
• 89 - 80: B
• 79 - 70: C
• 69 - 60: D
• 59 and below: F

Sample Output:
Grade Checker
Enter your grade: 88
You earned a B

• Assume the user will enter valid data.
• Selection structure needs to be used.

CIS115 Week 3 Lab Change Calculator and Shipping Calculator in Python

CIS115 Week 3 Lab Overview

Title of Lab: Change Calculator and Shipping Calculator in Python

Summary - Part 1
Create a program that calculates the coins needed to make change for the specified number of cents.

Summary - Part 2
Create a program that calculates the total cost of an order including shipping.

Deliverables
• 2 source code Python files.
• A Word document containing both source code and the screen print of the program outputs.

Lab Steps
Part 1 – Change Calculator

Sample Output:
Change Calculator
Enter number of cents (0-99): 99
Quarters: 3
Dimes: 2
Nickels: 0
Pennies: 4
Continue? (y/n): y
Enter number of cents (0-99): 55
Quarters: 2
Dimes: 0
Nickels: 1
Pennies: 0
Continue? (y/n): n
Bye!

Specifications:
• The program should display the minimum number of quarters, dimes, nickels, and pennies that one needs to make up the specified number of cents.
• Assume that the user will enter a valid integer for the number of cents.
• The program should continue only if the user enters "y" or "Y" to continue.

Part 2 – Shipping Calculator

Sample Output:
===============================================================
Shipping Calculator
===============================================================
Cost of items ordered: 49.99
Shipping cost:             7.95
Total cost:                 57.94

Continue? (y/n): y
===============================================================
Cost of items ordered: -65.50
You must enter a positive number. Please try again.
Cost of items ordered: 65.50
Shipping cost:             9.95
Total cost:                 75.45

Continue? (y/n): n
===============================================================
Bye!

Specifications:
Use the following table to calculate shipping cost:
Cost of Items Shipping Cost
< $30.00  $5.95
$30.00    - $49.99 $7.95
$50.00    - $74.99 $9.95
> $75.00  Free

• If the user enters a number that’s less than zero, display an error message and give the user a chance to enter the number again.

CIS115 Week 4 Lab Multiplication Table in Python

CIS115 Week 4 Lab Overview

Title of Lab: Multiplication Table in Python

Summary
This week's lab is to create a simple multiplication table using nested loops and if statements.
Prompt the user for the size of the multiplication table (from 2x2 to 10x10). Use a validation loop to display a warning if the number is less than 2 or greater than 10 and prompt the user to enter the data again until they enter a valid number.
Put a # after any even number in your table (odd numbers will have just a space/nothing after them).

Deliverables
• A source code Python file.
• A Word document containing both source code and the screen print of the program outputs.

Lab Steps

Sample Output:
The output should be something similar to the following.
What size multiplication table would you like? (2 - 10): 1
Invalid entry - Enter a number between 2 and 10
What size multiplication table would you like? (2 - 10): 15
Invalid entry - Enter a number between 2 and 10
What size multiplication table would you like? (2 - 10): 10

--- Multiplication Table ( 10 x 10 ) ---
         1      2      3      4      5      6      7      8      9     10
---------------------------------------------------------------------------
1  |     1      2 #    3      4 #    5      6 #    7      8 #    9     10 #
2  |     2 #    4 #    6 #    8 #   10 #   12 #   14 #   16 #   18 #   20 #
3  |     3      6 #    9     12 #   15     18 #   21     24 #   27     30 #
4  |     4 #    8 #   12 #   16 #   20 #   24 #   28 #   32 #   36 #   40 #
5  |     5     10 #   15     20 #   25     30 #   35     40 #   45     50 #
6  |     6 #   12 #   18 #   24 #   30 #   36 #   42 #   48 #   54 #   60 #
7  |     7     14 #   21     28 #   35     42 #   49     56 #   63     70 #
8  |     8 #   16 #   24 #   32 #   40 #   48 #   56 #   64 #   72 #   80 #
9  |     9     18 #   27     36 #   45     54 #   63     72 #   81     90 #
10 |    10 #   20 #   30 #   40 #   50 #   60 #   70 #   80 #   90 #  100 #

Hints:
• The outer loop will start each new row.
• The inner loop will control the display of each column in the row.
• Note that to keep the numbers right-aligned, there are different amounts of space before single digit numbers (those less than 10), double digit numbers (those between 10-99), and triple digit numbers (100).
• The row labels can be added to your inner loop (note that there are different amounts of space required after the number in the row labels.
• The column labels should use a separate loop(s) that run before the main outer loop.
• You can continue printing on the same line using end="" in your print statement. This will come in handy if you want to print several things on one line inside a loop. For example, assuming the value of name is Ada, the following will print "Hello Ada" on one line:
print("hello ", end="")
print(name, end="")

Tips:
• Start early!
• Do the basic table first without worrying about spacing or lining things up, and don't include row or column headings (add those later).
• Once you get the numbers in the correct position, think about adding the proper amount of space before each number to line things up.
• Once the columns line up, add the #/space for even/odd numbers.
• Once the basic table is working, then add the row and column headings, and finally the main title.
• Test as you go!

CIS115 Week 5 Lab Race Time Sorting in Python

CIS115 Week 5 Lab Overview

Title of Lab: Race Time Sorting in Python

Summary
Store the times into arrays called Chevy[ ] and Ford[ ]. Then list the winner of each pair, giving the number of seconds the winner won by. At the end declare which team won based on which team had the most wins.

Deliverables
• A source code Python file.
• A Word document containing both source code and the screen print of the program outputs.

Lab Steps
There are eight cars in each team called Chevy and Ford. One car from each team races its opponent on the drag strip. Read in the racing times for the eight Chevy cars and then read in the times for the eight Ford cars.

Sample Match:
---Input Chevy Times---
Enter time for Chevy Car 1: 5.4
Enter time for Chevy Car 2: 7.2
Enter time for Chevy Car 3: 4.0
Enter time for Chevy Car 4: 9.1
Enter time for Chevy Car 5: 5.8
Enter time for Chevy Car 6: 3.9
Enter time for Chevy Car 7: 6.2
Enter time for Chevy Car 8: 8.1
---Input Ford Times---
Enter time for Ford Car 1: 5.8
Enter time for Ford Car 2: 6.9
Enter time for Ford Car 3: 3.9
Enter time for Ford Car 4: 9.2
Enter time for Ford Car 5: 5.8
Enter time for Ford Car 6: 3.8
Enter time for Ford Car 7: 6.0
Enter time for Ford Car 8: 8.5
And the winners are:
Chevy by 0.4 sec
Ford by 0.3 sec
Ford by 0.1 sec
Chevy by 0.1 sec
Tie!
Ford by 0.1 sec
Ford by 0.2 sec
Chevy by 0.4 sec
And the winning team is: F O R D !

Specifications:
• Accept the racing times for each of the Chevy cars into the array Chevy[ ].
• Accept the racing times for each of the Ford cars into the array Ford[ ].
• Then declare the wining car for each race, giving the winning time in seconds.
• If the times are identical, then declare the race was a tie.
• Finally, declare which team won the match, assuming a tie is possible.

CIS115 Week 6 Lab Shopping List in Python

CIS115 Week 6 Lab Overview

Title of Lab: Shopping List in Python

Summary
Create a program that will allow a user to add, list, and delete items from a shopping list.

Deliverables
• A source code Python file.
• A Word document containing both source code and the screen print of the program outputs.

Lab Steps
The program should be modular. For example, you will want to have an add_item(shopping_list) function, a delete_item(shopping_list) function, a display_list(shopping_list) function, a display_menu() function, and a main().

Sample Output:
Welcome to the program!
1. Add an item
2. List all items
3. Delete an item
4. Exit

Enter a menu option: 2
1 : bananas
2 : apples

Enter a menu option: 1
Please enter the item: pears
pears was added to the shopping list

Enter a menu option: 2
1 : bananas
2 : apples
3 : pears

Enter a menu option: 3
Which number to delete: 3
pears was deleted

Enter a menu option: 2
1 : bananas
2 : apples

Enter a menu option: 4
have a great day!

Specifications:
• The program should start with 2 items in the shopping list.
• Don't forget to include at the end of the program the code:
 o if __name__ == "__main__":
   main();
• Use this code for the delete_item(shopping_list) function:
 def delete_item(shopping_list):
    number=int(input("Which number to delete: "))
    if number<1 or number>len(shopping_list):
        print("Invalid number\n")
    else:
        item=shopping_list.pop(number-1)
        print(item," was deleted\n")
    print()