The first argument to STRMATCH should be a row vector when using flag ''exact''. Requires character array or cell array of character vectors as inputs. FLAG must be a character vector. The third argument to STRMATCH is not valid and will not be recognized in a future version of MATLAB. Use the character vector ''exact'' instead. Use flag ''exact'' in place of ''{0}''. Flag ''{1}'' is not valid and will not be recognized in a future version of MATLAB.