C-Question - memory addresses pos or neg?

[bas]

This is really a C-Question, but this is the best Forum I've found to post...

It is a fact - Pointer variables contain memory addresses as their values. Could it be possible(valid) for that value to be negative?

Thanks,
bas

 

[sflam]

AFAIK, addresses are unsigned values starting from 0.

However, not all programming languages support unsigned type. For those languages, some addresses appears to be negative when view as a signed number.

Shyan