C++有很多的库, 你自己也可以写几个, 但那是你自己的,只有你自己用能用. MS也有很多C++库, 但那只能在MS系统上用, 而C++标准库是大家都可以用的,所有的C++编译器都支持-C++ has a lot of library, you can also write several, but it is your own, only yourself with use. MS also has a lot of c++ library, but that can only be used on the MS system, and c++ standard library is everybody can use, all the c++ compiler are supported