Other headers #included via <iostream>

[Guest]

Hi,

As most of you probably already know, depending on which
implementation of C++ you have, #include <iostream> may cause various
other headers to be #included too. (I've observed cstring, cstdio,
cmath and I think cstdlib in g++)

Are there any that the standard requires to be "dragged in" like this
regardless of implementation?

Thanks,

James M.

 

[Victor Bazarov]

As most of you probably already know, depending on which
implementation of C++ you have, #include <iostream> may cause various
other headers to be #included too. (I've observed cstring, cstdio,
cmath and I think cstdlib in g++)

Are there any that the standard requires to be "dragged in" like this
regardless of implementation?

No. You need to include the headers that declare/define what you intend
on using. The Standard only requires that multiple inclusion of the same
header does no harm.

V