Re: What is your opinion about unsigned int u = -2 ?

Thiago Adams <thiago.adams@gmail.com> writes:

What is your opinion about this:
>
unsigned int u1 = -1;
>
Generally -1 is used to get the maximum value.

Yes, that's a common usage, though I prefer either -1u or ~0u.

Is this guaranteed to work?
>
How about this one?
>
unsigned int u2 = -2;
Does it makes sense? Maybe a warning here?

Warnings are almost always good, especially if they can be configured.
For example you can ask gcc to warn about converting -1 to unsigned
while leaving -1u and ~0u alone.

--
Ben.