You have been tasked to write a C# application that will go through the first step of encrypting an input file and writing the encrypted contents to an output file.

For this first step in encryption, read each letter in from the input file, add 3 letters to the value of the input letter. If the input letter is an A then the encrypted letter would be a D. If the input letter from the input file is an X then the encrypted letter would be an A.
All spaces, digits, punctuation, and special characters do not need to be encrypted at this level.   Simply write the space, punctuation, or special character to the output file as is.
If a letter is uppercase in the input file, it should remain as an uppercase character in the output file. If a letter is lowercase in the input file, it should remain as a lowercase character in the output file.

Since this program runs each month, the input file will be of various lengths; therefore, the program will read until end of file.

The input file is found in the current directory and is named October20.txt.   The output file will be written to the current directory and named EncryptOct20.txt.

An example:

If the contents of the input file is

The output file would be:

What the user should see when the program executes:


When the program begins, the statement "Encryption Level 1" should be displayed.
The focus should be set to the "Begin Encryption" button.
When the user clicks the "Begin Encryption" button, the program opens the input file, the statement "Opening input file...." should be displayed. The "Begin Encryption" button should be disabled.
When the program begins reading through the input file encrypting the contents, the statement "Encrypting input file...." should be displayed.
When the program closes the input and output files, the statement "Encryption complete...." should be displayed.
When the program is complete, the statement "End of process" should be displayed.

Due

Sunday, November 1st at 11:59 PM

Deliverables

There is one deliverable for this assignment

• hw7.py

Make sure the script obeys all the rules in the Script Requirements page.

Specification

Your script must print a Kelvin to Fahrenheit conversion table and between a minimum and maximum values, and a Fahrenheit to Kelvin conversion also between a minimum and maximum values.

Here is the formula for converting Kelvin to Fahrenheit

Here is the formula for converting Fahrenheit to Kelvin

The script must have 5 functions

• get_int
• kelvin_to_fahrenheit
• kelvin_to_fahrenheit_table
• fahrenheit_to_kelvin
• fahrenheit_to_kelvin_table

get_int

This function must have the following header

def get_int(prompt):

The function prompts the user for a value, converts it to integer and returns the value.

kelvin_to_fahrenheit

This function must have the following header

def kelvin_to_fahrenheit(kelvin):

The function converts a Kelvin temperature to Fahrenheit and returns the Fahrenheit value.

The Fahrenheit value must be an integer.

kelvin_to_fahrenheit_table

This function must have the following header

def kelvin_to_fahrenheit_table(min, max):

The function prints a Kelvin to Fahrenheit conversion table running from min to max.

Before printing the table, the function prints the labels "Kelvin" and "Fahrenheit", followed by a line of dashes.

The Fahrenheit values should align with the "Fahrenheit" label.

See the example below.

fahrenheit_to_kelvin

This function must have the following header

def fahrenheit_to_kelvin(fahrenheit):

The function converts a Fahrenheit temperature to Kelvin and returns the Kelvin value.

The Kelvin value must be an integer.

fahrenheit_to_kelvin_table

This function must have the following header

def fahrenheit_to_kelvin_table(min, max):

The function prints a Fahrenheit to Kelvin conversion table running from min to max.

Before printing the table, the function prints the labels "Fahrenheit" and "Kelvin", followed by a line of dashes.

The Kelvin values should align with the "Kelvin" label.

See the example below.

Script for this assignment

Open an a text editor and create the file hw7.py.

You can use the editor built into IDLE or a program like Sublime.

Test Code

Your hw7.py file must contain the following test code at the bottom of the file

min_kelvin = get_int("Minimum Kelvin temperature: ")
max_kelvin = get_int("Maximum Kelvin temperature: ")
print()
kelvin_to_fahrenheit_table(min_kelvin, max_kelvin)
print()
min_fahrenheit = get_int("Minimum Fahrenheit temperature: ")
max_fahrenheit = get_int("Maximum Fahrenheit temperature: ")
print()
fahrenheit_to_kelvin_table(min_fahrenheit, max_fahrenheit)

You should see something like this

python3 hw7.py
Minimum Kelvin temperature: 255
Maximum Kelvin temperature: 260

Kelvin  Fahrenheit
------------------
255     -1
256     1
257     3
258     5
259     7
260     8

Minimum Fahrenheit temperature: 10
Maximum Fahrenheit temperature: 15

Fahrenheit  Kelvin
-----------------------
10          261
11          261
12          262
13          263
14          263
15          264

The entries in blue are user input.

Suggestions

In other words, write a bit of code, test it, make whatever changes you need to get it working, and go on to the next step.

Write this program in a step-by-step fashion using the technique of incremental development.

1. Copy only the function headers for the file functions listed above into your script file.
   Under each header, write pass.
   Make sure this statement is indented.
   Run the script.
   Fix any errors you find.
2. Remove the pass statement from get_int.
   Replace it with a state that use input in an assignment statement to give the variable number a value.
   Convert number into an integer.
   Return number. Run the script.
   Fix any errors you find.
3. Remove the pass statement from kelvin_to_fahrenheit_table.
   Replace it with a statements that prints the labels and a line of dashes underneath.
   Run the script.
   Fix any errors you find.
4. Write a for loop gives the loop variable kelvin values from min to max.
   Inside the loop print the value of kelvin,
   Run the script.
   Fix any errors you find.
5. Remove the pass statement from kelvin_to_fahrenheit. Replace it with an assignment statement that uses a Kelvin to Fahrenheit conversion formula to give the variable fahrenheit a value.
   Return this value.
   Run the script.
   Fix any errors you find.
6. Repeat the previous 4 steps to complete the script.

Testing on Your Machine

• Open IDLE
• Use the Open command in IDLE to open hw7.py
• Under the Run menu, select Run Module
• Your output should look something like this

  Minimum Kelvin temperature: 255
  Maximum Kelvin temperature: 260
  
  Kelvin  Fahrenheit
  ------------------
  255     -1
  256     1
  257     3
  258     5
  259     7
  260     8
  
  Minimum Fahrenheit temperature: 10
  Maximum Fahrenheit temperature: 15
  
  Fahrenheit  Kelvin
  -----------------------
  10          261
  11          261
  12          262
  13          263
  14          263
  15          264

  The entries in blue are user input.

Unix Setup

• Log in to users3.cs.umb.edu
  You will be in your home directory.
• Go to your it116 directory

  cd it116

• Go to your hw directory

  cd hw

• Create a directory for this exercise

  mkdir  hw7

• Check that the directory was created

  ls

Copy the file to Unix

• Open FileZilla and connect to users3.cs.umb.edu
  You will have to connect using your Unix username and password.
• Copy the file to the to it116/hw/hw7

Testing the script on Unix

• Connect to
  Use an ssh client.
• Go to the directory for this exercise

  cd  it116/hw/hw7

• Run this script

  python3  hw7.py

• Your output should look something like this

  Minimum Kelvin temperature: 255
  Maximum Kelvin temperature: 260
  
  Kelvin  Fahrenheit
  ------------------
  255     -1
  256     1
  257     3
  258     5
  259     7
  260     8
  
  Minimum Fahrenheit temperature: 10
  Maximum Fahrenheit temperature: 15
  
  Fahrenheit  Kelvin
  -----------------------
  10          261
  11          261
  12          262
  13          263
  14          263
  15          264

  The entries in blue are user input.
• If your script does not run on users3 you will lose points

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Part A

Find the magnitude of the resultant displacement of this professor.

Express your answer in kilometers.

Part B

Find the direction of the resultant displacement of this professor.

Express your answer in degrees.

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A) The voltage produced tires to keep the magnetic flux constant.

B) The current always flows backwards.

C) Magnetic fields point from North to South.

D) All of these statements are pretty good descriptions.

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1. Outer skin 110mm brickwork (South facing, exposed aspect)

2. 30mm cavity

3. Inner skin of 10mm plasterboard

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