File encryption and decryption write a program that uses a dictionary to assign "codes" to each letter of the alphabet. for example: codes = { ‘a’ : ‘%’, ‘a’ : ‘9’, ‘b’ : ‘@’, ‘b’ : ‘#’, etc . .} using this example, the letter a would be assigned the symbol %, the letter a would be assigned the number 9, the letter b would be assigned the symbol @, and so forth. the program should open a specified text file, read its contents, then use the dictionary to write an encrypted version of the file’s contents to a second file. each character in the second file should contain the code for the corresponding character in the first file. write a second program that opens an encrypted file and displays its decrypted contents on the screen.

4.11 painting a wall (1) prompt the user to input integers for a wall's height and width. calculate and output the wall's area (integer). note that in this case there is a new line after each prompt. (submit for 1 point). enter wall height (feet): 11 enter wall width (feet): 15 wall area: 165 square feet (2) extend to also calculate and output the amount of paint in gallons needed to paint the wall (floating point). assume a gallon of paint covers 350 square feet. store this value in a variable. output the amount of paint needed using the %f conversion specifier. (submit for 2 points, so 3 points total). enter wall height (feet): 11 enter wall width (feet): 15 wall area: 165 square feet paint needed: 0.471429 gallons (3) extend to also calculate and output the number of 1 gallon cans needed to paint the wall. hint: use a math function to round up to the nearest gallon. (submit for 2 points, so 5 points total). enter wall height (feet): 11 enter wall width (feet): 15 wall area: 165 square feet paint needed: 0.471429 gallons

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What are the 12 colors of the spectrum called?