面向对象是C++的重要特性.



但是c++在c的基础上新增加的几点优化也是很耀眼的



就const直接可以取代c中的#define



以下几点很重要,学不好后果也也很严重

-Object-oriented C++ is an important feature. But the c++ in c on the basis of a few additional optimization is also very bright on the const Direct can replace c in the# define the following points is very important, learn the consequences of bad are also very serious