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The case of the odd case statement

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Steve D
Steve D 2011-8-17
关闭： MATLAB Answer Bot 2021-8-20
So I entered the following code and tried it with the dispaly(r) either commented out or not. Its just trying to try all case statement cases
Both ways seemed to behave wrong. See for yourself.
daylight = 1; while daylight whatever=1; while whatever r = fix(2.99 *rand) + 1; % n=1..3 %display(r); switch r case r==1 if whatever display('case 1'); end case r==2 if whatever display('case 2'); end otherwise display('otherwise'); whatever=0; end end end
% GO Figure! What am I doing wrong?
  1 个评论
Jan
Jan 2011-8-17
Please format your code, see: http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup

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回答（2 个）

Jan
Jan 2011-8-17
This problem appears frequently in the last weeks.
"case r==2" does not trigger for r==2, but it is equivalent to "case 1" if r==2 and "case 0" otherwise. As you can see in the documentation of switch, the correct syntax is:
switch r
case 1
...
case 2
...
otherwise
...
end
Steve D
Steve D 2011-8-18
%sorry for the missing indents before. daylight = 1; while daylight whatever=1; while whatever r = fix(2.99 *rand) + 1; % n=1..3 %display(r); switch r case r==1 if whatever display('case 1'); end case r==2 if whatever display('case 2'); end otherwise display('otherwise'); whatever=0; end end end
  1 个评论
Jan
Jan 2011-8-18
A repeation does not necessarily mean an improvement ;-)
You could edit the original question and delete this answer.

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