Options to use the switch case in matlab

Question

Jes 2017-10-22

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https://ww2.mathworks.cn/matlabcentral/answers/362623-options-to-use-the-switch-case-in-matlab

回答： Image Analyst 2017-10-22

采纳的回答： KL

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I am writing a program for adding and remove employee details using switch case statement.

Like the following

n=input('Enter the choice 1. Add 2. Remove');
switch n
 case 1
    Some operations
 case 2
   some operations
otherwise
   fprintf('The choice does not exist. Please try again\n'); 
   n=input('Enter the choice 1. Add 2. Remove');
end

i need a help in the above code. If the users enters the choice greater than 2, I should go back and execute the newly selected options( 1 or 2). Could you please help me with some options? Thanks

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dpb 2017-10-22

I'd suggest a couple alternatives...

Limit the input to the range of the SWITCH statement in the section of code getting input before the construct; this lowers the complexity of the code structure having to encompass the whole thing,
Consider LISTDLG as a way to accomplish 1) above...the user is given only the list of allowable choices from which to choose and includes a description as well as the visual clue rather than the text listing of options...

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Answer 1

KL 2017-10-22

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try this,

n = 3;
while(n~=1 || n~=2)
   n=input('Enter the choice 1. Add 2. Remove');
   switch n
   case 1
      Some operations
   case 2
      some operations
   otherwise
      fprintf('The choice does not exist. Please try again\n');
   end
end

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Jes 2017-10-22

Thanks a lot! Exactly what I need.

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Answer 2

Image Analyst 2017-10-22

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https://ww2.mathworks.cn/matlabcentral/answers/362623-options-to-use-the-switch-case-in-matlab#answer_287154

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Don't do that. Why make it way more complicated than it needs to be? Use questdlg() instead.

buttonText = questdlg('Enter your choice', titleBarCaption, 'Add', 'Remove', 'Add');
if strcmpi(buttonText, 'Add')
  % Code to add.
else
  % Code to remove.
end