is it possible to overwrite an input variable?

Is this a possible or good solution? No problem with the following code?

function X = myfunc(a,b,c)
if nargin < 3
    c = 42;
end

b = 137;

end

Answer 1

[Adam]

There is no 'problem' with overwriting 'b' syntactically, it is 'possible'. The fact that 'X' never gets created is a problem though.

Is it a 'possible solution'? To what? Not to anything as far as I can see!

It isn't a good solution to anything though because there is no purpose in passing b into the function in the first place.