Due Date: Wednesday September 2, midnight

Submit your individual file (hw2.py) with the Canvas link.

Reminder that "Individual" means that you should not talk to another student in the class about it. You ARE encouraged to talk to any TA or your lecturer.

Educational goals of this lab - verify that every student can

• write a Python program from a design
• using the input function and the print function
• using some math operators
• write some Python mathematical expressions

INSTRUCTIONS:

(50 points) Individual Problem:

To convert from kilometers to miles, you multiply the kilometers by 0.621371. To convert from miles to feet, you multiply the miles by 5280. To convert from feet to yards, divide the feet by 3. This program should input an amount of kilometers and convert it to miles and then to feet and then to yards.

• (16 points) Individual Problem #1: Complete a test plan.
  • Calculate what A., B., C and D will be. Yes, a calculator is perfectly fine to use here. You do not have to give all the labels, just show the 3 numbers in the order miles, feet, yards, showing 3 places for each.

    Description	Input kilometers	Expected output miles, feet, yards
    Normal, integer kilometers	10	A.
    Normal, float kilometers	12.5	B.
    Boundary, zero kilometers	0	C.
    Scientific notation kilometers	2e4	D.

  • Put these answers as comments at the bottom of the program you write.
• (10 points) Individual Problem #2: Design

  • # prolog
    # GIVE name, section, email address
    #Purpose:   Calculate the equivalent number of miles, feet and yards from kilometers.
    #Preconditions:    FILL THIS OUT
    #Postconditions:   FILL THIS OUT
    
       # 1. Get needed data from the keyboard, the number of kilometers.
       # 2. Calculate the equivalent miles. 
       # 3. Calculate the equivalent number of feet.
       # 4. Calculate the equivalent number of yards.
       # 5. Print blank line
       # 6. Output the input kilometers with label and 3 places.
       # 7. Output the miles with label and 3 places.
       # 8. Output the feet with label and 3 places.
       # 9. Output the yards with label and 3 places.
    

  • Make sure you document your program in the .py file with this design. You must have a prolog (name, section, email, purpose, preconditions, postconditions) (see Lab1 for an example prolog).
  • The Pre-conditions are the input - what type it is and its meaning, and the Post-conditions are the outputs - what type they are and their meanings. You need to fill in these lines of the prolog.
• (24 points) Individual Problem #3: Implementation
  • Implement your design in Python. You must include the design given above in your program as comments. Your code statements should appear between the design steps.
  • Use meaningful variable names!
  • ALL your code MUST be inside a main function. There is a penalty of 15 points if it is not.
  • Don't forget to put your test case results at the bottom of the py file.
  • The output should be formatted exactly like the samples below: (italicized bold text is what the user typed in)

    Test run 1

    Enter kilometers: 15.0
    
    15.000 kilometers = 9.321 miles
    which is 49212.583 feet
    which is 16404.194 yards
    

    Test run 2

    Enter kilometers: 1
    
    1.000 kilometers = 0.621 miles
    which is 3280.839 feet
    which is 1093.613 yards
    

    Test run 3

    Enter kilometers: 193.45
    
    193.450 kilometers = 120.204 miles
    which is 634678.281 feet
    which is 211559.427 yards
    

    Test run 4

    Enter kilometers: 0
    
    0.000 kilometers = 0.000 miles
    which is 0.000 feet
    which is 0.000 yards
    

  • Turn in your source file (hw2.py file) with the Canvas link.
  • Deadline to turn it in is Friday, February 5, midnight. If you turn it in after that but before 9 am the next day, you will lose half the points. If you turn it in any later than that, you lose all the points.