const * volatile *

[coolrama]

what does this declaration mean
const * volatile *

Is it valid. Is it used somewhere?

Thanks
Rama

 

[Alf P. Steinbach]

* coolrama:

what does this declaration mean
const * volatile *

Read it from right to left.

Look up the meaning of '*', 'volatile' and 'const', as you encounter them
reading that way, in your C++ textbook.

Which textbook is that, by the way?

Is it valid.

Not on its own, it's not a full declaration of something.

Is it used somewhere?

Presumably, where did you encounter it?

 

[red floyd]

* coolrama:



Read it from right to left.

Look up the meaning of '*', 'volatile' and 'const', as you encounter them
reading that way, in your C++ textbook.

Which textbook is that, by the way?





Not on its own, it's not a full declaration of something.





Presumably, where did you encounter it?

Once wrote (in C, but still valid C++):

const volatile unsigned long *const MEM_MAPPED_REGISTER =
(const volatile unsigned long *) 0xC0000000L;

Of course, I was working directly at the hardware level....