I know this is javagaming.org but would one of you be able to help me with this annoying issue.
I am trying to use a namespace from one class in another class ive defined it within a header
namespace a { int d; };
this is defined within source two as
namespace a {
int d = 5;
};
however I get duplicate definitions.
When I remove the int d from the namespace it dosnt work.
its probably a simple mistake if someone could help with it.
You could try removing the int part in source two, that might work, but i am not sure because I haven’t used C++ in a while
In the header for source one, change to
namespace a { extern int d; };
In C++ “int d” is actually a definition not a declaration even though you don’t give it a value (it gets undefined value). Saying extern tells it just to declare and it will be defined (i.e. the memory allocated) elsewhere - in source two in this case.
Ahh thanks , I remember reading that you needed extern somehwhere.