Exceptions aren't bad. They fit in well with C++'s RAII model, which is the most elegant thing about C++. If you have a bunch of code already that's not exception safe, then they're bad in that context. If you're writing really low level software, like the linux OS, then they're bad.

Can C handle exceptions?

C doesn't support exception handling. To throw an exception in C, you need to use something platform specific such as Win32's structured exception handling -- but to give any help with that, we'll need to know the platform you care about.

Is it good to throw exceptions?

In short: You should throw an exception if a method is not able to do the task it is supposed to do.