It's been a long time since I've done some significant C++, and I just bumped into something that strikes me as weird. (We're using Visual C++ 6.) I thought they'd both create a local variable of ...

The auto keyword, added in C++11, allows you to define a variable without knowing its type. Once defined, though, like other variables, it’s type can’t be changed, just like regular C++ variables.

Does it ever make sense to declare a variable in C or C++ as both volatile (in other words, “ever-changing”) and const (“read-only”)? If so, why? And how should you combine volatile and const properly ...