Is this valid (x = (*mat)+;)?

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(x = (*mat)++;)

If it is valid, explain to me why and how it will work.

c++ pointer syntax

  • This referring to the point and comma (;)?

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That’s not valid, you can’t have one statement in parentheses. Why?

Because the language specification (old text, new ones are paid) says so. They could allow it, but there is no advantage to it and eventually something could conflict with the evolution of language.

The idea is not to let do crazy things. Without the external parentheses and with the proper code around it would be valid. Anyway, analyzing an isolated code like that makes little sense.

When you want to know if something is valid, write to a file and see if the compiler accepts.

  • Thanks, it’s pretty clear now!

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    Vc posted a specification of almost 1400 pages. Where it says that this is invalid?

  • @God knows, but if the compilers invalidate this must be in the specification, after all what is not in it has no reason to do something like this in the compiler :)

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    @Amadeus chapter 6 gives the grammar of statements. I do not remember in any other corner where it is specified the possibility of having ;

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