How do I make a while loop that will return to a statement unless a condition is met

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Quan Seah 2018-4-16

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https://ww2.mathworks.cn/matlabcentral/answers/395131-how-do-i-make-a-while-loop-that-will-return-to-a-statement-unless-a-condition-is-met

评论： Walter Roberson 2018-4-16

I am trying to make a while loop that will goes on forever unless a condition is met, in this case I want the loop to keep repeating unless I enter the word imperial or metric. And when I enter other words it will continue ask the question "Please make a choice", the code i have here just opts out whenever i enter other words

clear,clc

x = [];

while isempty(x)

    x = input('Please make a choice (imperial or metric) - ','s');
    if strcmp(x,'imperial')
        disp('yes')
    if strcmp(x,'metric')
            disp('no')
    end
    end

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Answer 1

Walter Roberson 2018-4-16

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https://ww2.mathworks.cn/matlabcentral/answers/395131-how-do-i-make-a-while-loop-that-will-return-to-a-statement-unless-a-condition-is-met#answer_315300

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If strcmp()
  ...
elseif strcmp()
  ...
else
 Give message
 x = '' 
end

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Quan Seah 2018-4-16

I tried your answer it seems like i still get the same problem when i enter words other than imperial and metric, it just opts out of the loop

Walter Roberson 2018-4-16

Please show your revised code

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