First Summer 2006

8.

Write a program (called Eight) that translates a number between 0 and 4 into the closest letter grade. For example, the number 2.8 (which might have been the average of several grades) would be converted to B-. Break ties in favor of the better grade; for example 2.85 should be a B.

Here's a sample run of such a program: frilled.cs.indiana.edu%java Eight Enter numeric score then press Enter : 3.85 A frilled.cs.indiana.edu%java Eight Enter numeric score then press Enter : 3.84 A- frilled.cs.indiana.edu%java Eight Enter numeric score then press Enter : 3.5 A- frilled.cs.indiana.edu%java Eight Enter numeric score then press Enter : 3.49 B+ frilled.cs.indiana.edu%java Eight Enter numeric score then press Enter : 3.1 B frilled.cs.indiana.edu%java Eight Enter numeric score then press Enter : 10 A+ frilled.cs.indiana.edu%java Eight Enter numeric score then press Enter : -2 frilled.cs.indiana.edu%java Eight Enter numeric score then press Enter : -0.5 frilled.cs.indiana.edu%

You, of course, need to write a program in Python.

Before you work out this problem here are some questions, for your warm-up.

These questions are good practice, yet you don't need to turn them in:

1. Write a program that asks for a positive number.

   If the number you enter is positive the program asks for a second number, otherwise it ends.

2. Write a program that reads a positive integer and reports if the number entered is divisible by 19 or not.

3. Write a program that
   • asks the user to enter 1, 2, 3, or 4 (as an integer)
   • and reports "one", "two", "three", or "four" depending on the number that was entered.

   If the number does not match the program prints "sorry".

4. Write a program that generates a random integer between -50 and 50 every time you call it.

5. Write a program that starts from the string "123" and adds its digits to produce 6.

6. Write a program that
   • reads a string like "23:59"
   • and creates two integers out of it, one for the hours (23, in this case) and one for the minutes (59, here).

7. Write a program that
   • converts numbers bigger than 3.85
   • into an A (by printing the letter grade A to the screen in response),
   • numbers between 3.5 and 3.85 into an A-,
   • numbers between 3.15 and 3.5 into a B+
   • and all the other numbers into an "Unknown" type of message.