05-22-2011
Quote:
Originally Posted by
vistastar
a) It's platform dependent. In most cases you need not, for example, linux, windows xp or latter. In DOS, a string literal may be modified.
HP-UX, also.
Yes, you should explicitly mention const. Use const whenever and wherever you don't want the programmer messing with the data's contents. Use it liberally. It's a safety feature.
b) what he said. The pointer is unmodifiable. I don't know if it's useful to return that, but you can have variables declared as that.
c) They don't interfere with each other, therefore no race condition. If two run at the same time, who cares? They don't write anything, don't change anything, don't use anything, don't compete.
d) A pointer is a reference. In C++ you have the & type, which can be a bit dangerous since there's no straightforward way to errorcheck it...
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