如下：
[~, x] = saveBelmaxw(c,fspace,s);
cx = funfitxy(fspace,s,x);

但Matlab报错
??? [~, x] = saveBelmaxw(c,fspace,s);
      |
Error: Expression or statement is incorrect--possibly unbalanced (, {, or [.

要加括号？如果加是什么意思？