Questions 1 and 2: practice exercises (pretty much)
Question 3: Simple encoding
I used if statements inside of a while loop to change the odd and even elements into different characters. The odd elements had a different type of encoding than the even elements. Also used was a menu() function to ask the user if they want to decode the text.
Question 4: Planetary data
Practicing struct arrays
Question 5: Cell arrays and extracting data
