Assignment #2  A Little Number Crunching
Select one option from the four below. All options are worth the same number of points. The more
advanced options are provided for students who find the basic ones too easy and want more of a challenge.
Make sure you have read and understand the Modules
Information About Programming Assignments
and
Style Rules for Assignments
before submitting this assignment. Hand in only one program, please.
OPTION A (Basic): Some Easy Arithmetic
Compute and display the following values for the
n
= 5, 9 and 15:
•
1 + 2 + 3 + ... + n
•
( n * (n + 1) ) / 2
•
1 + 3 + 5 + ... + (2n  1)
•
n
2
Be sure that your output is well organized and understandable. You might try organizing it in a tabular form
(if you can; not required). What I don't want to see are undocumented numbers on the screen. This should
all be done in one run of a single program, not several runs with
n
modified in the source each time.
Here are some tips and hints:
1.
The "..." is called an "ellipsis" and means "and so forth". So, when n is 9, the expression
1 + 2 + 3 +
... + n
really means 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9. For n equal to 9, again, the expression
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 Spring '07
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 Computer Science, Equals sign, odd numbers

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