switch case construction help

Question

Ajay 2012-10-8

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/50204-switch-case-construction-help

(Ajay deleted the question so I (MF) am restoring it as best I can.)

I wrote this body of code:

function output = InteriorAngle(input)
switch input (InteriorAngle)
case 'triangle'
disp ('180')
case 'square'
disp ('360');
case 'pentagon'
disp ('540');
case 'hexagon'
disp ('720');
case 'heptagon'
disp ('900');
case 'octagon'
disp ('1080');
case 'nonagon'
disp ('1260');
case 'decagon'
disp ('1440');
otherwise
disp ('0');
end
end
but for some reason, it's not running when i input,
in = cell(1,3);
in{1,1} = 'triangle';
in{1,2} = 'hexagon';
in{1,3} = 'dodecagon';
out = InteriorAngle(in)

what am i doing wrong?

8 个评论
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Walter Roberson 2012-10-8

Question content has been edited out of existence by the original poster :(

Matt Fig 2012-10-9

在 MATLAB Online 中打开

Saved from google cache:

I wrote this body of code:

function output = InteriorAngle(input)
switch input (InteriorAngle)
case 'triangle'
disp ('180')
case 'square'
disp ('360');
case 'pentagon'
disp ('540');
case 'hexagon'
disp ('720');
case 'heptagon'
disp ('900');
case 'octagon'
disp ('1080');
case 'nonagon'
disp ('1260');
case 'decagon'
disp ('1440');
otherwise
disp ('0');
end
end
but for some reason, it's not running when i input,
in = cell(1,3);
in{1,1} = 'triangle';
in{1,2} = 'hexagon';
in{1,3} = 'dodecagon';
out = InteriorAngle(in)

what am i doing wrong?

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Answer 1

Matt Fig 2012-10-8

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/50204-switch-case-construction-help#answer_61289

编辑：Matt Fig 2012-10-8

You are recursively calling the function from inside the function with no way to terminate the recursion. Additionally, you have named a variable the same name as a MATLAB function (INPUT). In general, you should avoid this practice as it masks the function.

Once you take care of these problems, put your switch inside a FOR loop that loops over the length of the input argument. You switch on IN{ii}.

4 个评论
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Ajay 2012-10-8

在 MATLAB Online 中打开

function output = InteriorAngle(input)
  for s=1:8,
  switch input ('s')
      case 'triangle'
             disp ('180')
      case 'square'
              disp ('360');
      case 'pentagon'
              disp ('540');
      case 'hexagon'
              disp ('720');
      case 'heptagon'
              disp ('900');
      case 'octagon'
              disp ('1080');
      case 'nonagon'
              disp ('1260');
      case 'decagon'
              disp ('1440');
      otherwise
              disp ('0');
  end
  end
  end