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Re: Check if this basic Python script is coded right

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On 26/10/2013 18:36, HC wrote:
> I'm doing my first year in university and I need help with this basic assignment.
>
> Assignment: Write Python script that prints sum of cubes of numbers between 0-200 that are multiples of 3. 3^3+6^3+9^3+12^3....+198^3=?
>
> My script:
> count = 0
> answer = 0
>
> while count<200:
>      if count%3==0:
>          answer = answer + count**3
>      count = count + 1
>
> print ("Result is: " +str(answer))
>
> Is it all okay?
>
Just one small point: the assignment says that the numbers should be in
the range 0-200, but the loop's condition is count<200 it's excluding
200, so the numbers will actually be in the range 0-199.

However, as 200 isn't a multiple of 3, it won't affect the result, but
in another assignment it might.

(For the record, this is known as an "off-by-one" error.)

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Thread

Check if this basic Python script is coded right HC <hikmat@jafarli.net> - 2013-10-26 10:36 -0700
  Re: Check if this basic Python script is coded right Joel Goldstick <joel.goldstick@gmail.com> - 2013-10-26 13:53 -0400
  Re: Check if this basic Python script is coded right Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-10-26 18:55 +0100
  Re: Check if this basic Python script is coded right John Ladasky <john_ladasky@sbcglobal.net> - 2013-10-26 10:58 -0700
  Re: Check if this basic Python script is coded right MRAB <python@mrabarnett.plus.com> - 2013-10-26 19:20 +0100
    Re: Check if this basic Python script is coded right rusi <rustompmody@gmail.com> - 2013-10-27 05:20 -0700
      Re: Check if this basic Python script is coded right Tim Delaney <timothy.c.delaney@gmail.com> - 2013-10-28 08:30 +1100
  Re: Check if this basic Python script is coded right Terry Reedy <tjreedy@udel.edu> - 2013-10-26 15:46 -0400
  Re: Check if this basic Python script is coded right Terry Reedy <tjreedy@udel.edu> - 2013-10-26 16:16 -0400

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