[pjmlp]

iostream is good enough for most jobs, unless one is writing high performace IO code battling for each ms.

[tsimionescu]

Or unless one wants to write formatted output, or unless one wants to handle IO errors with RAII...

[pjmlp]

Perfectly fine with existing operators and handle classes.

Happily using iostreams since Turbo C++ 1.0 for MS-DOS in 1993, and will keep doing so, unless chasing ms optimizations.