A conceptual question about C/C++ programming language?

iostream is not C/C++, so its lack of modularity should not reflect negatively on C/C++ (which are as granular as you should ever need, as long as you are willing to write your own libraries). It just happens to be a nearly ubiquitous library used in C/C++ programming. Funny, just the other day, Ritchie and Stroustrup were both asking me, "When is Hahir H ever going to write a more modular version of iostream?"