How to exist out of 2 for loops.

Question

Max 2015-10-24

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/250834-how-to-exist-out-of-2-for-loops

评论： Walter Roberson 2015-10-24

for i=1:(q+1)
    ......
    for ...
        if ...
    break
        end
    end
end

Im having trouble breaking out of the first for loop. My code runs and finishes the second for loop. I want it to stop after the second for loop is finished running but instead it goes back to the first for loop and starts the whole thing over which obviously messes up the values I've produced in the second for loop. Basically I want the whole script to end after the second for loop is finished fully running.

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Answer 1

Walter Roberson 2015-10-24

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https://ww2.mathworks.cn/matlabcentral/answers/250834-how-to-exist-out-of-2-for-loops#answer_197210

在 MATLAB Online 中打开

You could call quit, which would exit MATLAB entirely. If you were within a function, you could call return to leave the function.

Otherwise you cannot exit two nested loops. You can, however, set a flag that indicates you want to exit the outer loop and have the outer loop test it.

   done_this_stuff = false;
   for K = ...
      for J = ...
        if ...
          done_this_stuff = true;
          break
        end
       ...
     end
     %now we are in just the outer loop
     if done_this_stuff
       break
     end
     ...
   end

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Max 2015-10-24

I'm not really sure what you mean, I have sent you a direct message via your profile.

Walter Roberson 2015-10-24

在 MATLAB Online 中打开

done_this_stuff = false;
for i=1:(q+1)
      ......
      for ...
          if ...
            done_this_stuff = true;
            break
          end
      end
      if done_this_stuff
        break
      end 
  end