MATLAB: Find a length of string/array without length function

MATLAB

Hi All,
Hope everyone is doing great. I have minor question, I am trying to write a simple function to find a length of string/array, of course without using length function of MATLAB.
I am trying to find if there is any condition related to error message index bound, then I can use it in loop. Any other ideas are more than welcome.
Thank you in advance.

Best Answer

I have no idea what the point of this question is, but do you mean something like this?
try
    k = 1;
    while( true )
        str(k);
        k = k + 1;
    end
catch
    strlength = k - 1;
end
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