MATLAB: If i have a nested while loop and the second condition of the loop is true but first is wrong how to make it go back again to the first while loop

#nested#while#loops

x=input('enter k');
n=numel(x);
while n<3
    x=input('enter correct number of k');
    n=numel(x);
    if n<3
        continue; 
    else
      while any(x<0)
          x=input('enter positive numbers of k');
          if any(x<0) 
              continue;
          else
              break;
          end 
      end
    end
end

Best Answer

You don't need two loops,
n = 0;
x=input('enter correct number of k');
while n<3
    n=numel(x);
    if n>=3 && all(x>0)
        break;
    elseif n>=3 && any(x<0)
        x = input('please enter positive values');
        n = 0;
        continue;
    else
        x=input('enter correct number of k');
        n = 0;
        continue;
    end
end
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