如何跨多个文件使用命名空间
我注意到 C++ 的 std 命名空间分布在多个文件中(如 vector、string、iostream， 等等.).我怎样才能在我的程序中完成同样的事情?我是否只是在每个单独的头文件中声明相同的命名空间，这样它就像:
I notice that C++'s std namespace is spread across several files (like in vector, string, iostream, etc.). How can I accomplish the same thing in my programs? Do I simply declare the same namespace in each individual header file, so that it's something like:
啊.
namespace something
{
class A {};
}
b.h
#include "a.h"
namespace something
{
class B : public A {};
}
然后在 main.cpp 中，我将只包含bh"和ah"，然后 using namespace something; 来使用这两个类?
And then in, say, main.cpp, I would just include "b.h" and "a.h" and then using namespace something; to use the two classes?
推荐答案
是的，就是这样.
相关文章