Clarification on #include <ostream>

[Stefan Ram]

The C++ standard from the 90s said that »#include <ostream>«
was required to use »<<« as in »::std::cout << 0«.

But since no implementation required this, it was often said
to be a defect in the standard.

Has this requirement been removed from the standard in the
meantime?

 

[Bo Persson]

The C++ standard from the 90s said that »#include <ostream>«
was required to use »<<« as in »::std::cout << 0«.

But since no implementation required this, it was often said
to be a defect in the standard.

Has this requirement been removed from the standard in the
meantime?

Yes, the new standard (C++11) requires <iostream> to include <istream>
and <ostream>.



Bo Persson